420917075 has 6 divisors (see below), whose sum is σ = 521937204. Its totient is φ = 336733640.

The previous prime is 420917053. The next prime is 420917083. The reversal of 420917075 is 570719024.

It is not a de Polignac number, because 420917075 - 2¹⁰ = 420916051 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8418317 + ... + 8418366.

It is an arithmetic number, because the mean of its divisors is an integer number (86989534).

Almost surely, 2^420917075 is an apocalyptic number.

420917075 is a deficient number, since it is larger than the sum of its proper divisors (101020129).

420917075 is a wasteful number, since it uses less digits than its factorization.

420917075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16836693 (or 16836688 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 420917075 is about 20516.2636705615. The cubic root of 420917075 is about 749.4319105486.

The spelling of 420917075 in words is "four hundred twenty million, nine hundred seventeen thousand, seventy-five".