420402002424 has 16 divisors (see below), whose sum is σ = 1051005006120. Its totient is φ = 140134000800.

The previous prime is 420402002393. The next prime is 420402002437. The reversal of 420402002424 is 424200204024.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 17516750101 = 420402002424 / (4 + 2 + 0 + 4 + 0 + 2 + 0 + 0 + 2 + 4 + 2 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 420402002394 and 420402002403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8758375027 + ... + 8758375074.

Almost surely, 2^420402002424 is an apocalyptic number.

It is an amenable number.

420402002424 is an abundant number, since it is smaller than the sum of its proper divisors (630603003696).

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

420402002424 is a wasteful number, since it uses less digits than its factorization.

420402002424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17516750110 (or 17516750106 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 420402002424 its reverse (424200204024), we get a palindrome (844602206448).

The spelling of 420402002424 in words is "four hundred twenty billion, four hundred two million, two thousand, four hundred twenty-four".