45212402 has 16 divisors (see below), whose sum is σ = 69638400. Its totient is φ = 22004928.

The previous prime is 45212399. The next prime is 45212429. The reversal of 45212402 is 20421254.

It is a happy number.

It is a super-2 number, since 2×45212402² = 4088322589219208, which contains 22 as substring.

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, 17498 + ... + 19914.

It is an arithmetic number, because the mean of its divisors is an integer number (4352400).

Almost surely, 2^45212402 is an apocalyptic number.

45212402 is a deficient number, since it is larger than the sum of its proper divisors (24425998).

45212402 is a wasteful number, since it uses less digits than its factorization.

45212402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665.

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

The square root of 45212402 is about 6724.0168054519. The cubic root of 45212402 is about 356.2480754179.

Adding to 45212402 its reverse (20421254), we get a palindrome (65633656).

The spelling of 45212402 in words is "forty-five million, two hundred twelve thousand, four hundred two".