420042404 has 12 divisors (see below), whose sum is σ = 752169264. Its totient is φ = 205136904.

The previous prime is 420042391. The next prime is 420042407. The reversal of 420042404 is 404240024.

It is not an unprimeable number, because it can be changed into a prime (420042407) 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, 1220882 + ... + 1221225.

It is an arithmetic number, because the mean of its divisors is an integer number (62680772).

Almost surely, 2^420042404 is an apocalyptic number.

It is an amenable number.

420042404 is a deficient number, since it is larger than the sum of its proper divisors (332126860).

420042404 is a wasteful number, since it uses less digits than its factorization.

420042404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442154 (or 2442152 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 420042404 is about 20494.9360574753. The cubic root of 420042404 is about 748.9124409011.

Adding to 420042404 its reverse (404240024), we get a palindrome (824282428).

The spelling of 420042404 in words is "four hundred twenty million, forty-two thousand, four hundred four".