402492 has 24 divisors (see below), whose sum is σ = 994896. Its totient is φ = 126208.

The previous prime is 402487. The next prime is 402503. The reversal of 402492 is 294204.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

402492 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 783 + ... + 1190.

It is an arithmetic number, because the mean of its divisors is an integer number (41454).

2⁴⁰²⁴⁹² is an apocalyptic number.

It is an amenable number.

402492 is an abundant number, since it is smaller than the sum of its proper divisors (592404).

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

402492 is a wasteful number, since it uses less digits than its factorization.

402492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997 (or 1995 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 402492 is about 634.4225721079. The cubic root of 402492 is about 73.8333234253.

Adding to 402492 its reverse (294204), we get a palindrome (696696).

The spelling of 402492 in words is "four hundred two thousand, four hundred ninety-two".