402132090 has 16 divisors (see below), whose sum is σ = 965117088. Its totient is φ = 107235216.

The previous prime is 402132007. The next prime is 402132091. The reversal of 402132090 is 90231204.

It is not an unprimeable number, because it can be changed into a prime (402132091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6702172 + ... + 6702231.

It is an arithmetic number, because the mean of its divisors is an integer number (60319818).

Almost surely, 2^402132090 is an apocalyptic number.

402132090 is an abundant number, since it is smaller than the sum of its proper divisors (562984998).

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

402132090 is a wasteful number, since it uses less digits than its factorization.

402132090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13404413.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 402132090 is about 20053.2314104236. The cubic root of 402132090 is about 738.1130950862.

Adding to 402132090 its reverse (90231204), we get a palindrome (492363294).

The spelling of 402132090 in words is "four hundred two million, one hundred thirty-two thousand, ninety".