402342929 has 2 divisors, whose sum is σ = 402342930. Its totient is φ = 402342928.

The previous prime is 402342907. The next prime is 402342937. The reversal of 402342929 is 929243204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 397603600 + 4739329 = 19940^2 + 2177^2 .

It is a cyclic number.

It is not a de Polignac number, because 402342929 - 2²⁰ = 401294353 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (402342229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201171464 + 201171465.

It is an arithmetic number, because the mean of its divisors is an integer number (201171465).

Almost surely, 2^402342929 is an apocalyptic number.

It is an amenable number.

402342929 is a deficient number, since it is larger than the sum of its proper divisors (1).

402342929 is an equidigital number, since it uses as much as digits as its factorization.

402342929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 402342929 is about 20058.4877047099. The cubic root of 402342929 is about 738.2420708140.

The spelling of 402342929 in words is "four hundred two million, three hundred forty-two thousand, nine hundred twenty-nine".