420443031020 has 48 divisors (see below), whose sum is σ = 959381068800. Its totient is φ = 154186234560.

The previous prime is 420443031007. The next prime is 420443031049. The reversal of 420443031020 is 20130344024.

It is a super-3 number, since 3×420443031020³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17833850 + ... + 17857409.

It is an arithmetic number, because the mean of its divisors is an integer number (19987105600).

Almost surely, 2^420443031020 is an apocalyptic number.

It is an amenable number.

420443031020 is an abundant number, since it is smaller than the sum of its proper divisors (538938037780).

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

420443031020 is a wasteful number, since it uses less digits than its factorization.

420443031020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35691318 (or 35691316 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 420443031020 its reverse (20130344024), we get a palindrome (440573375044).

The spelling of 420443031020 in words is "four hundred twenty billion, four hundred forty-three million, thirty-one thousand, twenty".