420404312 has 8 divisors (see below), whose sum is σ = 788258100. Its totient is φ = 210202152.

The previous prime is 420404293. The next prime is 420404371. The reversal of 420404312 is 213404024.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26275262 + ... + 26275277.

Almost surely, 2^420404312 is an apocalyptic number.

It is an amenable number.

420404312 is a deficient number, since it is larger than the sum of its proper divisors (367853788).

420404312 is a wasteful number, since it uses less digits than its factorization.

420404312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52550545 (or 52550541 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 420404312 is about 20503.7633618807. The cubic root of 420404312 is about 749.1274664925.

Adding to 420404312 its reverse (213404024), we get a palindrome (633808336).

The spelling of 420404312 in words is "four hundred twenty million, four hundred four thousand, three hundred twelve".