402540230 has 16 divisors (see below), whose sum is σ = 725972544. Its totient is φ = 160704960.

The previous prime is 402540209. The next prime is 402540253. The reversal of 402540230 is 32045204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33422 + ... + 43841.

It is an arithmetic number, because the mean of its divisors is an integer number (45373284).

Almost surely, 2^402540230 is an apocalyptic number.

402540230 is a deficient number, since it is larger than the sum of its proper divisors (323432314).

402540230 is a wasteful number, since it uses less digits than its factorization.

402540230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77791.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 402540230 is about 20063.4052443746. The cubic root of 402540230 is about 738.3627241886.

Adding to 402540230 its reverse (32045204), we get a palindrome (434585434).

The spelling of 402540230 in words is "four hundred two million, five hundred forty thousand, two hundred thirty".