1256102160 has 80 divisors (see below), whose sum is σ = 4098874560. Its totient is φ = 317329920.

The previous prime is 1256102147. The next prime is 1256102161. The reversal of 1256102160 is 612016521.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1256102160.

It is not an unprimeable number, because it can be changed into a prime (1256102161) 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, 133171 + ... + 142290.

It is an arithmetic number, because the mean of its divisors is an integer number (51235932).

Almost surely, 2^1256102160 is an apocalyptic number.

1256102160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1256102160 is an abundant number, since it is smaller than the sum of its proper divisors (2842772400).

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

1256102160 is a wasteful number, since it uses less digits than its factorization.

1256102160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275496 (or 275490 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1256102160 is about 35441.5315696148. The cubic root of 1256102160 is about 1078.9673943679.

Adding to 1256102160 its reverse (612016521), we get a palindrome (1868118681).

The spelling of 1256102160 in words is "one billion, two hundred fifty-six million, one hundred two thousand, one hundred sixty".