420270388 has 6 divisors (see below), whose sum is σ = 735473186. Its totient is φ = 210135192.

The previous prime is 420270373. The next prime is 420270439. The reversal of 420270388 is 883072024.

It can be written as a sum of positive squares in only one way, i.e., 323208484 + 97061904 = 17978^2 + 9852^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52533795 + ... + 52533802.

Almost surely, 2^420270388 is an apocalyptic number.

It is an amenable number.

420270388 is a deficient number, since it is larger than the sum of its proper divisors (315202798).

420270388 is a wasteful number, since it uses less digits than its factorization.

420270388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105067601 (or 105067599 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 420270388 is about 20500.4972622617. The cubic root of 420270388 is about 749.0479106942.

The spelling of 420270388 in words is "four hundred twenty million, two hundred seventy thousand, three hundred eighty-eight".