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123030141 = 31322271069
BaseRepresentation
bin1110101010101…
…00101001111101
322120111120121220
413111110221331
5222443431031
620112543553
73022511313
oct725245175
9276446556
10123030141
11634a1403
1235251bb9
131c648200
14124a80b3
15ac03596
hex7554a7d

123030141 has 24 divisors (see below), whose sum is σ = 178578720. Its totient is φ = 75306816.

The previous prime is 123030137. The next prime is 123030179. The reversal of 123030141 is 141030321.

It is not a de Polignac number, because 123030141 - 22 = 123030137 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 123030141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123030191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114555 + ... + 115623.

It is an arithmetic number, because the mean of its divisors is an integer number (7440780).

Almost surely, 2123030141 is an apocalyptic number.

It is an amenable number.

123030141 is a deficient number, since it is larger than the sum of its proper divisors (55548579).

123030141 is a wasteful number, since it uses less digits than its factorization.

123030141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325 (or 1312 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 123030141 is about 11091.8952843957. The cubic root of 123030141 is about 497.3596024793.

Adding to 123030141 its reverse (141030321), we get a palindrome (264060462).

The spelling of 123030141 in words is "one hundred twenty-three million, thirty thousand, one hundred forty-one".

Divisors: 1 3 13 39 169 227 507 681 1069 2951 3207 8853 13897 38363 41691 115089 180661 242663 541983 727989 3154619 9463857 41010047 123030141