423431420 has 12 divisors (see below), whose sum is σ = 889206024. Its totient is φ = 169372560.

The previous prime is 423431381. The next prime is 423431447. The reversal of 423431420 is 24134324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10585766 + ... + 10585805.

It is an arithmetic number, because the mean of its divisors is an integer number (74100502).

Almost surely, 2^423431420 is an apocalyptic number.

It is an amenable number.

423431420 is an abundant number, since it is smaller than the sum of its proper divisors (465774604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423431420 is a wasteful number, since it uses less digits than its factorization.

423431420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21171580 (or 21171578 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 423431420 is about 20577.4493074336. The cubic root of 423431420 is about 750.9211910425.

Adding to 423431420 its reverse (24134324), we get a palindrome (447565744).

The spelling of 423431420 in words is "four hundred twenty-three million, four hundred thirty-one thousand, four hundred twenty".