129874427 has 2 divisors, whose sum is σ = 129874428. Its totient is φ = 129874426.

The previous prime is 129874411. The next prime is 129874447. The reversal of 129874427 is 724478921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129874427 - 2⁴ = 129874411 is a prime.

It is not a weakly prime, because it can be changed into another prime (129874447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64937213 + 64937214.

It is an arithmetic number, because the mean of its divisors is an integer number (64937214).

Almost surely, 2^129874427 is an apocalyptic number.

129874427 is a deficient number, since it is larger than the sum of its proper divisors (1).

129874427 is an equidigital number, since it uses as much as digits as its factorization.

129874427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 44.

The square root of 129874427 is about 11396.2461802121. The cubic root of 129874427 is about 506.4165397920.

The spelling of 129874427 in words is "one hundred twenty-nine million, eight hundred seventy-four thousand, four hundred twenty-seven".