420172130 has 32 divisors (see below), whose sum is σ = 865347840. Its totient is φ = 143893440.

The previous prime is 420172117. The next prime is 420172157. The reversal of 420172130 is 31271024.

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, 68531 + ... + 74409.

It is an arithmetic number, because the mean of its divisors is an integer number (27042120).

Almost surely, 2^420172130 is an apocalyptic number.

420172130 is an abundant number, since it is smaller than the sum of its proper divisors (445175710).

420172130 is a wasteful number, since it uses less digits than its factorization.

420172130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6914.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 420172130 is about 20498.1006437182. The cubic root of 420172130 is about 748.9895310666.

The spelling of 420172130 in words is "four hundred twenty million, one hundred seventy-two thousand, one hundred thirty".