1056212639 has 2 divisors, whose sum is σ = 1056212640. Its totient is φ = 1056212638.

The previous prime is 1056212627. The next prime is 1056212657. The reversal of 1056212639 is 9362126501.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1056212639 is a prime.

It is a super-2 number, since 2×1056212639² = 2231170277566688642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1056212599 and 1056212608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1056212609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528106319 + 528106320.

It is an arithmetic number, because the mean of its divisors is an integer number (528106320).

Almost surely, 2^1056212639 is an apocalyptic number.

1056212639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056212639 is an equidigital number, since it uses as much as digits as its factorization.

1056212639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 1056212639 is about 32499.4252103018. The cubic root of 1056212639 is about 1018.3970204781.

The spelling of 1056212639 in words is "one billion, fifty-six million, two hundred twelve thousand, six hundred thirty-nine".