420589231 has 4 divisors (see below), whose sum is σ = 445329792. Its totient is φ = 395848672.

The previous prime is 420589219. The next prime is 420589237. The reversal of 420589231 is 132985024.

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

It is not a de Polignac number, because 420589231 - 2⁵ = 420589199 is a prime.

It is a super-2 number, since 2×420589231² = 353790602466342722, 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 (420589237) 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, 12370255 + ... + 12370288.

It is an arithmetic number, because the mean of its divisors is an integer number (111332448).

Almost surely, 2^420589231 is an apocalyptic number.

420589231 is a deficient number, since it is larger than the sum of its proper divisors (24740561).

420589231 is a wasteful number, since it uses less digits than its factorization.

420589231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24740560.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 420589231 is about 20508.2722577988. The cubic root of 420589231 is about 749.2372874371.

The spelling of 420589231 in words is "four hundred twenty million, five hundred eighty-nine thousand, two hundred thirty-one".