420572234 has 4 divisors (see below), whose sum is σ = 630858354. Its totient is φ = 210286116.

The previous prime is 420572189. The next prime is 420572267. The reversal of 420572234 is 432275024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 232471009 + 188101225 = 15247^2 + 13715^2 .

It is a junction number, because it is equal to n+sod(n) for n = 420572197 and 420572206.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105143057 + ... + 105143060.

Almost surely, 2^420572234 is an apocalyptic number.

420572234 is a deficient number, since it is larger than the sum of its proper divisors (210286120).

420572234 is a wasteful number, since it uses less digits than its factorization.

420572234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210286119.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 420572234 is about 20507.8578598546. The cubic root of 420572234 is about 749.2271944875.

The spelling of 420572234 in words is "four hundred twenty million, five hundred seventy-two thousand, two hundred thirty-four".