252140723 has 4 divisors (see below), whose sum is σ = 252688128. Its totient is φ = 251593320.

The previous prime is 252140683. The next prime is 252140731. The reversal of 252140723 is 327041252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 252140723 - 2¹² = 252136627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252140692 and 252140701.

It is not an unprimeable number, because it can be changed into a prime (252140323) 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, 273011 + ... + 273932.

It is an arithmetic number, because the mean of its divisors is an integer number (63172032).

Almost surely, 2^252140723 is an apocalyptic number.

252140723 is a deficient number, since it is larger than the sum of its proper divisors (547405).

252140723 is an equidigital number, since it uses as much as digits as its factorization.

252140723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547404.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 252140723 is about 15878.9396056538. The cubic root of 252140723 is about 631.7535115738.

Adding to 252140723 its reverse (327041252), we get a palindrome (579181975).

The spelling of 252140723 in words is "two hundred fifty-two million, one hundred forty thousand, seven hundred twenty-three".