420622140 has 48 divisors (see below), whose sum is σ = 1178771328. Its totient is φ = 112067904.

The previous prime is 420622117. The next prime is 420622187. The reversal of 420622140 is 41226024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89079 + ... + 93681.

It is an arithmetic number, because the mean of its divisors is an integer number (24557736).

Almost surely, 2^420622140 is an apocalyptic number.

It is an amenable number.

420622140 is an abundant number, since it is smaller than the sum of its proper divisors (758149188).

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

420622140 is a wasteful number, since it uses less digits than its factorization.

420622140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6138 (or 6136 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 420622140 is about 20509.0745768794. The cubic root of 420622140 is about 749.2568282821.

Adding to 420622140 its reverse (41226024), we get a palindrome (461848164).

The spelling of 420622140 in words is "four hundred twenty million, six hundred twenty-two thousand, one hundred forty".