420201612 has 72 divisors (see below), whose sum is σ = 1080796080. Its totient is φ = 137635200.

The previous prime is 420201487. The next prime is 420201629. The reversal of 420201612 is 216102024.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 592314 + ... + 593022.

Almost surely, 2^420201612 is an apocalyptic number.

It is an amenable number.

420201612 is an abundant number, since it is smaller than the sum of its proper divisors (660594468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420201612 is a wasteful number, since it uses less digits than its factorization.

420201612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 420201612 is about 20498.8197709039. The cubic root of 420201612 is about 749.0070486436.

Adding to 420201612 its reverse (216102024), we get a palindrome (636303636).

The spelling of 420201612 in words is "four hundred twenty million, two hundred one thousand, six hundred twelve".