423401252 has 24 divisors (see below), whose sum is σ = 786688056. Its totient is φ = 198701568.

The previous prime is 423401243. The next prime is 423401257. The reversal of 423401252 is 252104324.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 38613796 + 384787456 = 6214^2 + 19616^2 .

It is not an unprimeable number, because it can be changed into a prime (423401257) 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, 17018 + ... + 33710.

It is an arithmetic number, because the mean of its divisors is an integer number (32778669).

Almost surely, 2^423401252 is an apocalyptic number.

It is an amenable number.

423401252 is a deficient number, since it is larger than the sum of its proper divisors (363286804).

423401252 is a wasteful number, since it uses less digits than its factorization.

423401252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17087 (or 17085 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 423401252 is about 20576.7162589175. The cubic root of 423401252 is about 750.9033571207.

Adding to 423401252 its reverse (252104324), we get a palindrome (675505576).

The spelling of 423401252 in words is "four hundred twenty-three million, four hundred one thousand, two hundred fifty-two".