420403404 has 24 divisors (see below), whose sum is σ = 1038644208. Its totient is φ = 131891200.

The previous prime is 420403393. The next prime is 420403409. The reversal of 420403404 is 404304024.

It is not an unprimeable number, because it can be changed into a prime (420403409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1030197 + ... + 1030604.

It is an arithmetic number, because the mean of its divisors is an integer number (43276842).

Almost surely, 2^420403404 is an apocalyptic number.

It is an amenable number.

420403404 is an abundant number, since it is smaller than the sum of its proper divisors (618240804).

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

420403404 is a wasteful number, since it uses less digits than its factorization.

420403404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060825 (or 2060823 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 420403404 is about 20503.7412195921. The cubic root of 420403404 is about 749.1269271639.

Adding to 420403404 its reverse (404304024), we get a palindrome (824707428).

The spelling of 420403404 in words is "four hundred twenty million, four hundred three thousand, four hundred four".