1257418460 has 24 divisors (see below), whose sum is σ = 2672396496. Its totient is φ = 496906880.

The previous prime is 1257418457. The next prime is 1257418483. The reversal of 1257418460 is 648147521.

It is a super-2 number, since 2×1257418460² = 3162202367097543200, which contains 22 as substring.

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, 377081 + ... + 380400.

It is an arithmetic number, because the mean of its divisors is an integer number (111349854).

Almost surely, 2^1257418460 is an apocalyptic number.

1257418460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1257418460 is an abundant number, since it is smaller than the sum of its proper divisors (1414978036).

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

1257418460 is a wasteful number, since it uses less digits than its factorization.

1257418460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757573 (or 757571 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 1257418460 is about 35460.0967285765. The cubic root of 1257418460 is about 1079.3441548501.

The spelling of 1257418460 in words is "one billion, two hundred fifty-seven million, four hundred eighteen thousand, four hundred sixty".