420323252 has 12 divisors (see below), whose sum is σ = 767546976. Its totient is φ = 201024120.

The previous prime is 420323251. The next prime is 420323291. The reversal of 420323252 is 252323024.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420323251) 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, 2284274 + ... + 2284457.

It is an arithmetic number, because the mean of its divisors is an integer number (63962248).

Almost surely, 2^420323252 is an apocalyptic number.

It is an amenable number.

420323252 is a deficient number, since it is larger than the sum of its proper divisors (347223724).

420323252 is a wasteful number, since it uses less digits than its factorization.

420323252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4568758 (or 4568756 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 420323252 is about 20501.7865562980. The cubic root of 420323252 is about 749.0793158798.

Adding to 420323252 its reverse (252323024), we get a palindrome (672646276).

The spelling of 420323252 in words is "four hundred twenty million, three hundred twenty-three thousand, two hundred fifty-two".