402120332430979 has 2 divisors, whose sum is σ = 402120332430980. Its totient is φ = 402120332430978.

The previous prime is 402120332430937. The next prime is 402120332431057. The reversal of 402120332430979 is 979034233021204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402120332430979 - 2⁷ = 402120332430851 is a prime.

It is a super-2 number, since 2×402120332430979² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (402120332439979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201060166215489 + 201060166215490.

It is an arithmetic number, because the mean of its divisors is an integer number (201060166215490).

Almost surely, 2^{402120332430979} is an apocalyptic number.

402120332430979 is a deficient number, since it is larger than the sum of its proper divisors (1).

402120332430979 is an equidigital number, since it uses as much as digits as its factorization.

402120332430979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 49.

The spelling of 402120332430979 in words is "four hundred two trillion, one hundred twenty billion, three hundred thirty-two million, four hundred thirty thousand, nine hundred seventy-nine".