1057242500 has 30 divisors (see below), whose sum is σ = 2311983366. Its totient is φ = 422896000.

The previous prime is 1057242451. The next prime is 1057242509. The reversal of 1057242500 is 52427501.

It can be written as a sum of positive squares in 5 ways, for example, as 400960576 + 656281924 = 20024^2 + 25618^2 .

It is a super-2 number, since 2×1057242500² = 2235523407612500000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1057242500.

It is not an unprimeable number, because it can be changed into a prime (1057242509) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 208949 + ... + 213948.

Almost surely, 2^1057242500 is an apocalyptic number.

1057242500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1057242500 is an abundant number, since it is smaller than the sum of its proper divisors (1254740866).

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

1057242500 is an equidigital number, since it uses as much as digits as its factorization.

1057242500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422921 (or 422904 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 1057242500 is about 32515.2656455395. The cubic root of 1057242500 is about 1018.7279092403.

The spelling of 1057242500 in words is "one billion, fifty-seven million, two hundred forty-two thousand, five hundred".