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120104140 = 22513571809
BaseRepresentation
bin1110010100010…
…10010011001100
322100222220220111
413022022103030
5221221313030
615530125404
72655603562
oct712122314
9270886814
10120104140
1161883022
1234280864
131bb62450
1411d45a32
15a82662a
hex728a4cc

120104140 has 48 divisors (see below), whose sum is σ = 272432160. Its totient is φ = 44213760.

The previous prime is 120104123. The next prime is 120104141. The reversal of 120104140 is 41401021.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 120104140.

It is not an unprimeable number, because it can be changed into a prime (120104141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148056 + ... + 148864.

It is an arithmetic number, because the mean of its divisors is an integer number (5675670).

Almost surely, 2120104140 is an apocalyptic number.

120104140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120104140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136216080).

120104140 is an abundant number, since it is smaller than the sum of its proper divisors (152328020).

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

120104140 is a wasteful number, since it uses less digits than its factorization.

120104140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402 (or 1400 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 120104140 is about 10959.2034382066. The cubic root of 120104140 is about 493.3850576803.

Adding to 120104140 its reverse (41401021), we get a palindrome (161505161).

The spelling of 120104140 in words is "one hundred twenty million, one hundred four thousand, one hundred forty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 571 809 1142 1618 2284 2855 3236 4045 5710 7423 8090 10517 11420 14846 16180 21034 29692 37115 42068 52585 74230 105170 148460 210340 461939 923878 1847756 2309695 4619390 6005207 9238780 12010414 24020828 30026035 60052070 120104140