126904831 has 2 divisors, whose sum is σ = 126904832. Its totient is φ = 126904830.

The previous prime is 126904829. The next prime is 126904837. The reversal of 126904831 is 138409621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126904831 - 2¹ = 126904829 is a prime.

It is a super-2 number, since 2×126904831² = 32209672262277122, which contains 22 as substring.

Together with 126904829, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126904837) 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, 63452415 + 63452416.

It is an arithmetic number, because the mean of its divisors is an integer number (63452416).

Almost surely, 2^126904831 is an apocalyptic number.

126904831 is a deficient number, since it is larger than the sum of its proper divisors (1).

126904831 is an equidigital number, since it uses as much as digits as its factorization.

126904831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 126904831 is about 11265.2044366714. The cubic root of 126904831 is about 502.5269818767.

The spelling of 126904831 in words is "one hundred twenty-six million, nine hundred four thousand, eight hundred thirty-one".