420120304 has 20 divisors (see below), whose sum is σ = 814791600. Its totient is φ = 209851520.

The previous prime is 420120299. The next prime is 420120319. The reversal of 420120304 is 403021024.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 4269 + ... + 29299.

It is an arithmetic number, because the mean of its divisors is an integer number (40739580).

Almost surely, 2^420120304 is an apocalyptic number.

It is an amenable number.

420120304 is a deficient number, since it is larger than the sum of its proper divisors (394671296).

420120304 is a wasteful number, since it uses less digits than its factorization.

420120304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26088 (or 26082 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 420120304 is about 20496.8364388264. The cubic root of 420120304 is about 748.9587351739.

Adding to 420120304 its reverse (403021024), we get a palindrome (823141328).

The spelling of 420120304 in words is "four hundred twenty million, one hundred twenty thousand, three hundred four".