45402420 has 72 divisors (see below), whose sum is σ = 147891744. Its totient is φ = 10377024.

The previous prime is 45402407. The next prime is 45402439. The reversal of 45402420 is 2420454.

It is a super-2 number, since 2×45402420² = 4122759483712800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4782 + ... + 10661.

It is an arithmetic number, because the mean of its divisors is an integer number (2054052).

Almost surely, 2^45402420 is an apocalyptic number.

It is an amenable number.

45402420 is an abundant number, since it is smaller than the sum of its proper divisors (102489324).

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

45402420 is a wasteful number, since it uses less digits than its factorization.

45402420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15469 (or 15460 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 45402420 is about 6738.1317885598. The cubic root of 45402420 is about 356.7464558829.

Adding to 45402420 its reverse (2420454), we get a palindrome (47822874).

The spelling of 45402420 in words is "forty-five million, four hundred two thousand, four hundred twenty".