1256120160 has 96 divisors (see below), whose sum is σ = 4128848640. Its totient is φ = 320398848.

The previous prime is 1256120147. The next prime is 1256120179. The reversal of 1256120160 is 610216521.

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

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 1256120160.

It is a congruent number.

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, 45850 + ... + 67929.

It is an arithmetic number, because the mean of its divisors is an integer number (43008840).

Almost surely, 2^1256120160 is an apocalyptic number.

1256120160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1256120160 is an abundant number, since it is smaller than the sum of its proper divisors (2872728480).

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

1256120160 is a wasteful number, since it uses less digits than its factorization.

1256120160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113820 (or 113812 counting only the distinct ones).

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

The square root of 1256120160 is about 35441.7855080694. The cubic root of 1256120160 is about 1078.9725482269.

Adding to 1256120160 its reverse (610216521), we get a palindrome (1866336681).

The spelling of 1256120160 in words is "one billion, two hundred fifty-six million, one hundred twenty thousand, one hundred sixty".