420944004531 has 12 divisors (see below), whose sum is σ = 608036399152. Its totient is φ = 280626488496.

The previous prime is 420944004511. The next prime is 420944004539. The reversal of 420944004531 is 135400449024.

420944004531 is a `hidden beast` number, since 4 + 209 + 4 + 400 + 45 + 3 + 1 = 666.

It is not a de Polignac number, because 420944004531 - 2¹³ = 420943996339 is a prime.

It is a super-2 number, since 2×420944004531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420944004539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1088850 + ... + 1423896.

Almost surely, 2^420944004531 is an apocalyptic number.

420944004531 is a deficient number, since it is larger than the sum of its proper divisors (187092394621).

420944004531 is a wasteful number, since it uses less digits than its factorization.

420944004531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474650 (or 474647 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 420944004531 in words is "four hundred twenty billion, nine hundred forty-four million, four thousand, five hundred thirty-one".