420522012 has 18 divisors (see below), whose sum is σ = 1062986288. Its totient is φ = 140173992.

The previous prime is 420522001. The next prime is 420522023. The reversal of 420522012 is 210225024.

It is an interprime number because it is at equal distance from previous prime (420522001) and next prime (420522023).

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5840548 + ... + 5840619.

Almost surely, 2^420522012 is an apocalyptic number.

It is an amenable number.

420522012 is an abundant number, since it is smaller than the sum of its proper divisors (642464276).

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

420522012 is a wasteful number, since it uses less digits than its factorization.

420522012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11681177 (or 11681172 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 420522012 is about 20506.6333658160. The cubic root of 420522012 is about 749.1973706880.

Adding to 420522012 its reverse (210225024), we get a palindrome (630747036).

The spelling of 420522012 in words is "four hundred twenty million, five hundred twenty-two thousand, twelve".