420531212 has 12 divisors (see below), whose sum is σ = 737100336. Its totient is φ = 209931120.

The previous prime is 420531211. The next prime is 420531247. The reversal of 420531212 is 212135024.

It is not an unprimeable number, because it can be changed into a prime (420531211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80783 + ... + 85830.

It is an arithmetic number, because the mean of its divisors is an integer number (61425028).

Almost surely, 2^420531212 is an apocalyptic number.

It is an amenable number.

420531212 is a deficient number, since it is larger than the sum of its proper divisors (316569124).

420531212 is a wasteful number, since it uses less digits than its factorization.

420531212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167248 (or 167246 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 420531212 is about 20506.8576822486. The cubic root of 420531212 is about 749.2028341876.

Adding to 420531212 its reverse (212135024), we get a palindrome (632666236).

The spelling of 420531212 in words is "four hundred twenty million, five hundred thirty-one thousand, two hundred twelve".