420406602 has 32 divisors (see below), whose sum is σ = 1048287744. Its totient is φ = 109196400.

The previous prime is 420406589. The next prime is 420406607. The reversal of 420406602 is 206604024.

It is a super-2 number, since 2×420406602² = 353483422010372808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420406607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454524 + ... + 455447.

It is an arithmetic number, because the mean of its divisors is an integer number (32758992).

Almost surely, 2^420406602 is an apocalyptic number.

420406602 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

420406602 is an abundant number, since it is smaller than the sum of its proper divisors (627881142).

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

420406602 is a wasteful number, since it uses less digits than its factorization.

420406602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909994.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 420406602 is about 20503.8192052115. The cubic root of 420406602 is about 749.1288266901.

The spelling of 420406602 in words is "four hundred twenty million, four hundred six thousand, six hundred two".