420107904 has 64 divisors (see below), whose sum is σ = 1239912000. Its totient is φ = 140034816.

The previous prime is 420107899. The next prime is 420107911. The reversal of 420107904 is 409701024.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 57324 + ... + 64235.

It is an arithmetic number, because the mean of its divisors is an integer number (19373625).

Almost surely, 2^420107904 is an apocalyptic number.

It is an amenable number.

420107904 is an abundant number, since it is smaller than the sum of its proper divisors (819804096).

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

420107904 is a wasteful number, since it uses less digits than its factorization.

420107904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121582 (or 121564 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 420107904 is about 20496.5339508903. The cubic root of 420107904 is about 748.9513665071.

Adding to 420107904 its reverse (409701024), we get a palindrome (829808928).

The spelling of 420107904 in words is "four hundred twenty million, one hundred seven thousand, nine hundred four".