402424079257 has 2 divisors, whose sum is σ = 402424079258. Its totient is φ = 402424079256.

The previous prime is 402424079207. The next prime is 402424079261. The reversal of 402424079257 is 752970424204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 359689267081 + 42734812176 = 599741^2 + 206724^2 .

It is a cyclic number.

It is not a de Polignac number, because 402424079257 - 2²⁷ = 402289861529 is a prime.

It is not a weakly prime, because it can be changed into another prime (402424079207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201212039628 + 201212039629.

It is an arithmetic number, because the mean of its divisors is an integer number (201212039629).

Almost surely, 2^402424079257 is an apocalyptic number.

It is an amenable number.

402424079257 is a deficient number, since it is larger than the sum of its proper divisors (1).

402424079257 is an equidigital number, since it uses as much as digits as its factorization.

402424079257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1128960, while the sum is 46.

The spelling of 402424079257 in words is "four hundred two billion, four hundred twenty-four million, seventy-nine thousand, two hundred fifty-seven".