129402937 has 2 divisors, whose sum is σ = 129402938. Its totient is φ = 129402936.

The previous prime is 129402919. The next prime is 129402943. The reversal of 129402937 is 739204921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74287161 + 55115776 = 8619^2 + 7424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129402937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129402896 and 129402905.

It is not a weakly prime, because it can be changed into another prime (129402137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64701468 + 64701469.

It is an arithmetic number, because the mean of its divisors is an integer number (64701469).

Almost surely, 2^129402937 is an apocalyptic number.

It is an amenable number.

129402937 is a deficient number, since it is larger than the sum of its proper divisors (1).

129402937 is an equidigital number, since it uses as much as digits as its factorization.

129402937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 129402937 is about 11375.5411739398. The cubic root of 129402937 is about 505.8029731229.

The spelling of 129402937 in words is "one hundred twenty-nine million, four hundred two thousand, nine hundred thirty-seven".