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123114144 = 25331411009
BaseRepresentation
bin1110101011010…
…01001010100000
322120122211212010
413111221022200
5223004123034
620114432520
73023311236
oct725511240
9276584763
10123114144
116354952a
1235292740
131c67750a
14124ca956
15ac1d3e9
hex75692a0

123114144 has 96 divisors (see below), whose sum is σ = 342074880. Its totient is φ = 38707200.

The previous prime is 123114139. The next prime is 123114157. The reversal of 123114144 is 441411321.

It is a tau number, because it is divible by the number of its divisors (96).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 123114144.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121512 + ... + 122520.

It is an arithmetic number, because the mean of its divisors is an integer number (3563280).

Almost surely, 2123114144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123114144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171037440).

123114144 is an abundant number, since it is smaller than the sum of its proper divisors (218960736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123114144 is a wasteful number, since it uses less digits than its factorization.

123114144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094 (or 1086 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 123114144 is about 11095.6813220280. The cubic root of 123114144 is about 497.4727731032.

Adding to 123114144 its reverse (441411321), we get a palindrome (564525465).

The spelling of 123114144 in words is "one hundred twenty-three million, one hundred fourteen thousand, one hundred forty-four".

Divisors: 1 2 3 4 6 8 12 16 24 31 32 41 48 62 82 93 96 123 124 164 186 246 248 328 372 492 496 656 744 984 992 1009 1271 1312 1488 1968 2018 2542 2976 3027 3813 3936 4036 5084 6054 7626 8072 10168 12108 15252 16144 20336 24216 30504 31279 32288 40672 41369 48432 61008 62558 82738 93837 96864 122016 124107 125116 165476 187674 248214 250232 330952 375348 496428 500464 661904 750696 992856 1000928 1282439 1323808 1501392 1985712 2564878 3002784 3847317 3971424 5129756 7694634 10259512 15389268 20519024 30778536 41038048 61557072 123114144