402504373 has 2 divisors, whose sum is σ = 402504374. Its totient is φ = 402504372.

The previous prime is 402504337. The next prime is 402504437. The reversal of 402504373 is 373405204.

Together with previous prime (402504337) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 321198084 + 81306289 = 17922^2 + 9017^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402504373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402204373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201252186 + 201252187.

It is an arithmetic number, because the mean of its divisors is an integer number (201252187).

Almost surely, 2^402504373 is an apocalyptic number.

It is an amenable number.

402504373 is a deficient number, since it is larger than the sum of its proper divisors (1).

402504373 is an equidigital number, since it uses as much as digits as its factorization.

402504373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 402504373 is about 20062.5116323954. The cubic root of 402504373 is about 738.3407998720.

Adding to 402504373 its reverse (373405204), we get a palindrome (775909577).

The spelling of 402504373 in words is "four hundred two million, five hundred four thousand, three hundred seventy-three".