420324156 has 108 divisors (see below), whose sum is σ = 1301107080. Its totient is φ = 113762880.

The previous prime is 420324139. The next prime is 420324187. The reversal of 420324156 is 651423024.

It is a super-2 number, since 2×420324156² = 353344792234224672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 27246 + ... + 39786.

Almost surely, 2^420324156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420324156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (650553540).

420324156 is an abundant number, since it is smaller than the sum of its proper divisors (880782924).

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

420324156 is a wasteful number, since it uses less digits than its factorization.

420324156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12584 (or 12572 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 420324156 is about 20501.8086031452. The cubic root of 420324156 is about 749.0798529008.

The spelling of 420324156 in words is "four hundred twenty million, three hundred twenty-four thousand, one hundred fifty-six".