1256102480 has 40 divisors (see below), whose sum is σ = 2922750432. Its totient is φ = 502043264.

The previous prime is 1256102467. The next prime is 1256102513. The reversal of 1256102480 is 842016521.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108659 + ... + 119661.

Almost surely, 2^1256102480 is an apocalyptic number.

1256102480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1256102480 is an abundant number, since it is smaller than the sum of its proper divisors (1666647952).

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

1256102480 is a wasteful number, since it uses less digits than its factorization.

1256102480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12443 (or 12437 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 1256102480 is about 35441.5360840921. The cubic root of 1256102480 is about 1078.9674859924.

The spelling of 1256102480 in words is "one billion, two hundred fifty-six million, one hundred two thousand, four hundred eighty".