402429971 has 2 divisors, whose sum is σ = 402429972. Its totient is φ = 402429970.

The previous prime is 402429959. The next prime is 402430033. The reversal of 402429971 is 179924204.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402429971 is a prime.

It is not a weakly prime, because it can be changed into another prime (402429931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201214985 + 201214986.

It is an arithmetic number, because the mean of its divisors is an integer number (201214986).

Almost surely, 2^402429971 is an apocalyptic number.

402429971 is a deficient number, since it is larger than the sum of its proper divisors (1).

402429971 is an equidigital number, since it uses as much as digits as its factorization.

402429971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 402429971 is about 20060.6572923222. The cubic root of 402429971 is about 738.2953035403.

The spelling of 402429971 in words is "four hundred two million, four hundred twenty-nine thousand, nine hundred seventy-one".