423331240 has 16 divisors (see below), whose sum is σ = 952495380. Its totient is φ = 169332480.

The previous prime is 423331213. The next prime is 423331253. The reversal of 423331240 is 42133324.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 413634244 + 9696996 = 20338^2 + 3114^2 .

It is a super-3 number, since 3×423331240³ (a number of 27 digits) contains 333 as substring.

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, 5291601 + ... + 5291680.

Almost surely, 2^423331240 is an apocalyptic number.

423331240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423331240 is an abundant number, since it is smaller than the sum of its proper divisors (529164140).

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

423331240 is a wasteful number, since it uses less digits than its factorization.

423331240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10583292 (or 10583288 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 423331240 is about 20575.0149453166. The cubic root of 423331240 is about 750.8619660103.

Adding to 423331240 its reverse (42133324), we get a palindrome (465464564).

The spelling of 423331240 in words is "four hundred twenty-three million, three hundred thirty-one thousand, two hundred forty".