421450231 has 4 divisors (see below), whose sum is σ = 421629472. Its totient is φ = 421270992.

The previous prime is 421450199. The next prime is 421450259. The reversal of 421450231 is 132054124.

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

It is a cyclic number.

It is not a de Polignac number, because 421450231 - 2⁵ = 421450199 is a prime.

It is a super-2 number, since 2×421450231² = 355240594419906722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421450261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86046 + ... + 90811.

It is an arithmetic number, because the mean of its divisors is an integer number (105407368).

Almost surely, 2^421450231 is an apocalyptic number.

421450231 is a deficient number, since it is larger than the sum of its proper divisors (179241).

421450231 is a wasteful number, since it uses less digits than its factorization.

421450231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179240.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 421450231 is about 20529.2530550919. The cubic root of 421450231 is about 749.7482005092.

It can be divided in two parts, 4214 and 50231, that added together give a palindrome (54445).

The spelling of 421450231 in words is "four hundred twenty-one million, four hundred fifty thousand, two hundred thirty-one".