420602240 has 64 divisors (see below), whose sum is σ = 1058454000. Its totient is φ = 159381504.

The previous prime is 420602233. The next prime is 420602249. The reversal of 420602240 is 42206024.

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 (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420602249) 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, 5135 + ... + 29454.

Almost surely, 2^420602240 is an apocalyptic number.

420602240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420602240 is an abundant number, since it is smaller than the sum of its proper divisors (637851760).

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

420602240 is a wasteful number, since it uses less digits than its factorization.

420602240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34627 (or 34615 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 420602240 is about 20508.5894200454. The cubic root of 420602240 is about 749.2450120979.

Adding to 420602240 its reverse (42206024), we get a palindrome (462808264).

The spelling of 420602240 in words is "four hundred twenty million, six hundred two thousand, two hundred forty".