126956539 has 2 divisors, whose sum is σ = 126956540. Its totient is φ = 126956538.

The previous prime is 126956507. The next prime is 126956567. The reversal of 126956539 is 935659621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126956539 - 2⁵ = 126956507 is a prime.

It is a super-2 number, since 2×126956539² = 32235925589717042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126956639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63478269 + 63478270.

It is an arithmetic number, because the mean of its divisors is an integer number (63478270).

Almost surely, 2^126956539 is an apocalyptic number.

126956539 is a deficient number, since it is larger than the sum of its proper divisors (1).

126956539 is an equidigital number, since it uses as much as digits as its factorization.

126956539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 437400, while the sum is 46.

The square root of 126956539 is about 11267.4992345240. The cubic root of 126956539 is about 502.5952249755.

The spelling of 126956539 in words is "one hundred twenty-six million, nine hundred fifty-six thousand, five hundred thirty-nine".