1056491042 has 16 divisors (see below), whose sum is σ = 1594728000. Its totient is φ = 524924400.

The previous prime is 1056491021. The next prime is 1056491047. The reversal of 1056491042 is 2401946501.

It is a super-2 number, since 2×1056491042² = 2232346643652491528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1056491047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272417 + ... + 276267.

It is an arithmetic number, because the mean of its divisors is an integer number (99670500).

Almost surely, 2^1056491042 is an apocalyptic number.

1056491042 is a deficient number, since it is larger than the sum of its proper divisors (538236958).

1056491042 is a wasteful number, since it uses less digits than its factorization.

1056491042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4681.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1056491042 is about 32503.7081269199. The cubic root of 1056491042 is about 1018.4864910600.

The spelling of 1056491042 in words is "one billion, fifty-six million, four hundred ninety-one thousand, forty-two".