1057420624 has 20 divisors (see below), whose sum is σ = 2206349236. Its totient is φ = 488040192.

The previous prime is 1057420619. The next prime is 1057420657. The reversal of 1057420624 is 4260247501.

It can be written as a sum of positive squares in 2 ways, for example, as 693374224 + 364046400 = 26332^2 + 19080^2 .

It is a super-2 number, since 2×1057420624² = 2236276752121098752, 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 3 ways as a sum of consecutive naturals, for example, 2541669 + ... + 2542084.

Almost surely, 2^1057420624 is an apocalyptic number.

It is an amenable number.

1057420624 is an abundant number, since it is smaller than the sum of its proper divisors (1148928612).

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

1057420624 is a wasteful number, since it uses less digits than its factorization.

1057420624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5083774 (or 5083768 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 1057420624 is about 32518.0046128295. The cubic root of 1057420624 is about 1018.7851177175.

The spelling of 1057420624 in words is "one billion, fifty-seven million, four hundred twenty thousand, six hundred twenty-four".