402402125 has 16 divisors (see below), whose sum is σ = 510719040. Its totient is φ = 316459600.

The previous prime is 402402107. The next prime is 402402139. The reversal of 402402125 is 521204204.

It is a happy number.

It is not a de Polignac number, because 402402125 - 2¹⁴ = 402385741 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 402402097 and 402402106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19907 + ... + 34656.

It is an arithmetic number, because the mean of its divisors is an integer number (31919940).

Almost surely, 2^402402125 is an apocalyptic number.

It is an amenable number.

402402125 is a deficient number, since it is larger than the sum of its proper divisors (108316915).

402402125 is an equidigital number, since it uses as much as digits as its factorization.

402402125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54637 (or 54627 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 402402125 is about 20059.9632352604. The cubic root of 402402125 is about 738.2782744531.

Adding to 402402125 its reverse (521204204), we get a palindrome (923606329).

The spelling of 402402125 in words is "four hundred two million, four hundred two thousand, one hundred twenty-five".