420145612 has 6 divisors (see below), whose sum is σ = 735254828. Its totient is φ = 210072804.

The previous prime is 420145589. The next prime is 420145673. The reversal of 420145612 is 216541024.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52518198 + ... + 52518205.

Almost surely, 2^420145612 is an apocalyptic number.

It is an amenable number.

420145612 is a deficient number, since it is larger than the sum of its proper divisors (315109216).

420145612 is a wasteful number, since it uses less digits than its factorization.

420145612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105036407 (or 105036405 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 420145612 is about 20497.4537930934. The cubic root of 420145612 is about 748.9737739354.

Adding to 420145612 its reverse (216541024), we get a palindrome (636686636).

The spelling of 420145612 in words is "four hundred twenty million, one hundred forty-five thousand, six hundred twelve".