421230252 has 24 divisors (see below), whose sum is σ = 983295936. Its totient is φ = 140349328.

The previous prime is 421230241. The next prime is 421230253. The reversal of 421230252 is 252032124.

It is not an unprimeable number, because it can be changed into a prime (421230253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27943 + ... + 40289.

It is an arithmetic number, because the mean of its divisors is an integer number (40970664).

Almost surely, 2^421230252 is an apocalyptic number.

It is an amenable number.

421230252 is an abundant number, since it is smaller than the sum of its proper divisors (562065684).

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

421230252 is a wasteful number, since it uses less digits than its factorization.

421230252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15197 (or 15195 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 421230252 is about 20523.8946596400. The cubic root of 421230252 is about 749.6177323061.

Adding to 421230252 its reverse (252032124), we get a palindrome (673262376).

The spelling of 421230252 in words is "four hundred twenty-one million, two hundred thirty thousand, two hundred fifty-two".