252340243 has 4 divisors (see below), whose sum is σ = 252940048. Its totient is φ = 251740440.

The previous prime is 252340229. The next prime is 252340247. The reversal of 252340243 is 342043252.

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 252340243 - 2²⁵ = 218785811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252340247) 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, 299271 + ... + 300112.

It is an arithmetic number, because the mean of its divisors is an integer number (63235012).

Almost surely, 2^252340243 is an apocalyptic number.

252340243 is a deficient number, since it is larger than the sum of its proper divisors (599805).

252340243 is an equidigital number, since it uses as much as digits as its factorization.

252340243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599804.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 252340243 is about 15885.2208986844. The cubic root of 252340243 is about 631.9201040312.

Adding to 252340243 its reverse (342043252), we get a palindrome (594383495).

The spelling of 252340243 in words is "two hundred fifty-two million, three hundred forty thousand, two hundred forty-three".