420412144 has 20 divisors (see below), whose sum is σ = 819262296. Its totient is φ = 208989632.

The previous prime is 420412117. The next prime is 420412163. The reversal of 420412144 is 441214024.

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, 73174 + ... + 78709.

Almost surely, 2^420412144 is an apocalyptic number.

It is an amenable number.

420412144 is a deficient number, since it is larger than the sum of its proper divisors (398850152).

420412144 is a wasteful number, since it uses less digits than its factorization.

420412144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152064 (or 152058 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 420412144 is about 20503.9543503198. The cubic root of 420412144 is about 749.1321184666.

Adding to 420412144 its reverse (441214024), we get a palindrome (861626168).

The spelling of 420412144 in words is "four hundred twenty million, four hundred twelve thousand, one hundred forty-four".