252740423 has 8 divisors (see below), whose sum is σ = 281568000. Its totient is φ = 225253728.

The previous prime is 252740419. The next prime is 252740447. The reversal of 252740423 is 324047252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252740423 - 2² = 252740419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252746423) 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, 334823 + ... + 335576.

It is an arithmetic number, because the mean of its divisors is an integer number (35196000).

Almost surely, 2^252740423 is an apocalyptic number.

252740423 is a deficient number, since it is larger than the sum of its proper divisors (28827577).

252740423 is a wasteful number, since it uses less digits than its factorization.

252740423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670441.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 252740423 is about 15897.8118934651. The cubic root of 252740423 is about 632.2539762960.

Adding to 252740423 its reverse (324047252), we get a palindrome (576787675).

The spelling of 252740423 in words is "two hundred fifty-two million, seven hundred forty thousand, four hundred twenty-three".