420375945 has 32 divisors (see below), whose sum is σ = 765656064. Its totient is φ = 194955200.

The previous prime is 420375937. The next prime is 420375947. The reversal of 420375945 is 549573024.

It is not a de Polignac number, because 420375945 - 2³ = 420375937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420375947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51591 + ... + 59180.

It is an arithmetic number, because the mean of its divisors is an integer number (23926752).

Almost surely, 2^420375945 is an apocalyptic number.

It is an amenable number.

420375945 is a deficient number, since it is larger than the sum of its proper divisors (345280119).

420375945 is a wasteful number, since it uses less digits than its factorization.

420375945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110813.

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 420375945 is about 20503.0715991531. The cubic root of 420375945 is about 749.1106168582.

The spelling of 420375945 in words is "four hundred twenty million, three hundred seventy-five thousand, nine hundred forty-five".