421507275 has 48 divisors (see below), whose sum is σ = 799544064. Its totient is φ = 191940480.

The previous prime is 421507259. The next prime is 421507277. The reversal of 421507275 is 572705124.

421507275 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 421507275 - 2⁴ = 421507259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421507277) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 147157 + ... + 149993.

It is an arithmetic number, because the mean of its divisors is an integer number (16657168).

Almost surely, 2^421507275 is an apocalyptic number.

421507275 is a deficient number, since it is larger than the sum of its proper divisors (378036789).

421507275 is a wasteful number, since it uses less digits than its factorization.

421507275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3140 (or 3135 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 33.

The square root of 421507275 is about 20530.6423426058. The cubic root of 421507275 is about 749.7820255445.

The spelling of 421507275 in words is "four hundred twenty-one million, five hundred seven thousand, two hundred seventy-five".