1056213427 has 2 divisors, whose sum is σ = 1056213428. Its totient is φ = 1056213426.

The previous prime is 1056213391. The next prime is 1056213443. The reversal of 1056213427 is 7243126501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1056213427 - 2⁷ = 1056213299 is a prime.

It is a super-2 number, since 2×1056213427² = 2231173606750168658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1056213127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528106713 + 528106714.

It is an arithmetic number, because the mean of its divisors is an integer number (528106714).

Almost surely, 2^1056213427 is an apocalyptic number.

1056213427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056213427 is an equidigital number, since it uses as much as digits as its factorization.

1056213427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1056213427 is about 32499.4373335909. The cubic root of 1056213427 is about 1018.3972737405.

Adding to 1056213427 its reverse (7243126501), we get a palindrome (8299339928).

The spelling of 1056213427 in words is "one billion, fifty-six million, two hundred thirteen thousand, four hundred twenty-seven".