126502979 has 2 divisors, whose sum is σ = 126502980. Its totient is φ = 126502978.

The previous prime is 126502951. The next prime is 126503009. The reversal of 126502979 is 979205621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126502979 - 2²⁰ = 125454403 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (126502949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63251489 + 63251490.

It is an arithmetic number, because the mean of its divisors is an integer number (63251490).

Almost surely, 2^126502979 is an apocalyptic number.

126502979 is a deficient number, since it is larger than the sum of its proper divisors (1).

126502979 is an equidigital number, since it uses as much as digits as its factorization.

126502979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 126502979 is about 11247.3543111258. The cubic root of 126502979 is about 501.9959934179.

The spelling of 126502979 in words is "one hundred twenty-six million, five hundred two thousand, nine hundred seventy-nine".