420404052 has 12 divisors (see below), whose sum is σ = 980942816. Its totient is φ = 140134680.

The previous prime is 420404011. The next prime is 420404053. The reversal of 420404052 is 250404024.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420404053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17516824 + ... + 17516847.

Almost surely, 2^420404052 is an apocalyptic number.

It is an amenable number.

420404052 is an abundant number, since it is smaller than the sum of its proper divisors (560538764).

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

420404052 is a wasteful number, since it uses less digits than its factorization.

420404052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35033678 (or 35033676 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 420404052 is about 20503.7570215802. The cubic root of 420404052 is about 749.1273120593.

Adding to 420404052 its reverse (250404024), we get a palindrome (670808076).

The spelling of 420404052 in words is "four hundred twenty million, four hundred four thousand, fifty-two".