423252520 has 16 divisors (see below), whose sum is σ = 952318260. Its totient is φ = 169300992.

The previous prime is 423252499. The next prime is 423252521. The reversal of 423252520 is 25252324.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 382828356 + 40424164 = 19566^2 + 6358^2 .

It is not an unprimeable number, because it can be changed into a prime (423252521) 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, 5290617 + ... + 5290696.

Almost surely, 2^423252520 is an apocalyptic number.

423252520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423252520 is an abundant number, since it is smaller than the sum of its proper divisors (529065740).

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

423252520 is a wasteful number, since it uses less digits than its factorization.

423252520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10581324 (or 10581320 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 423252520 is about 20573.1018565505. The cubic root of 423252520 is about 750.8154212777.

The spelling of 423252520 in words is "four hundred twenty-three million, two hundred fifty-two thousand, five hundred twenty".