420133212 has 18 divisors (see below), whose sum is σ = 1062003488. Its totient is φ = 140044392.

The previous prime is 420133211. The next prime is 420133213. The reversal of 420133212 is 212331024.

420133212 is a `hidden beast` number, since 420 + 1 + 33 + 212 = 666.

It is an interprime number because it is at equal distance from previous prime (420133211) and next prime (420133213).

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 not an unprimeable number, because it can be changed into a prime (420133211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5835148 + ... + 5835219.

Almost surely, 2^420133212 is an apocalyptic number.

It is an amenable number.

420133212 is an abundant number, since it is smaller than the sum of its proper divisors (641870276).

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

420133212 is a wasteful number, since it uses less digits than its factorization.

420133212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11670377 (or 11670372 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 420133212 is about 20497.1513142680. The cubic root of 420133212 is about 748.9664055644.

Adding to 420133212 its reverse (212331024), we get a palindrome (632464236).

The spelling of 420133212 in words is "four hundred twenty million, one hundred thirty-three thousand, two hundred twelve".