402543460 has 24 divisors (see below), whose sum is σ = 922190976. Its totient is φ = 146379360.

The previous prime is 402543433. The next prime is 402543497. The reversal of 402543460 is 64345204.

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, 914652 + ... + 915091.

It is an arithmetic number, because the mean of its divisors is an integer number (38424624).

Almost surely, 2^402543460 is an apocalyptic number.

It is an amenable number.

402543460 is an abundant number, since it is smaller than the sum of its proper divisors (519647516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402543460 is a wasteful number, since it uses less digits than its factorization.

402543460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829763 (or 1829761 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 402543460 is about 20063.4857390235. The cubic root of 402543460 is about 738.3646990680.

Adding to 402543460 its reverse (64345204), we get a palindrome (466888664).

The spelling of 402543460 in words is "four hundred two million, five hundred forty-three thousand, four hundred sixty".