1056503642 has 4 divisors (see below), whose sum is σ = 1584755466. Its totient is φ = 528251820.

The previous prime is 1056503639. The next prime is 1056503659. The reversal of 1056503642 is 2463056501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2463056501 = 337 ⋅7308773.

It can be written as a sum of positive squares in only one way, i.e., 994077841 + 62425801 = 31529^2 + 7901^2 .

It is a super-2 number, since 2×1056503642² = 2232399891118528328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1056503599 and 1056503608.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264125909 + ... + 264125912.

Almost surely, 2^1056503642 is an apocalyptic number.

1056503642 is a deficient number, since it is larger than the sum of its proper divisors (528251824).

1056503642 is an equidigital number, since it uses as much as digits as its factorization.

1056503642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528251823.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 1056503642 is about 32503.9019503813. The cubic root of 1056503642 is about 1018.4905399597.

The spelling of 1056503642 in words is "one billion, fifty-six million, five hundred three thousand, six hundred forty-two".