420542431320 has 64 divisors (see below), whose sum is σ = 1376320688640. Its totient is φ = 101949680000.

The previous prime is 420542431319. The next prime is 420542431327. The reversal of 420542431320 is 23134245024.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420542431327) 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, 159295056 + ... + 159297695.

It is an arithmetic number, because the mean of its divisors is an integer number (21505010760).

Almost surely, 2^420542431320 is an apocalyptic number.

420542431320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420542431320 is an abundant number, since it is smaller than the sum of its proper divisors (955778257320).

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

420542431320 is a wasteful number, since it uses less digits than its factorization.

420542431320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318592776 (or 318592772 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 420542431320 its reverse (23134245024), we get a palindrome (443676676344).

The spelling of 420542431320 in words is "four hundred twenty billion, five hundred forty-two million, four hundred thirty-one thousand, three hundred twenty".