252440143 has 16 divisors (see below), whose sum is σ = 264648736. Its totient is φ = 240589440.

The previous prime is 252440141. The next prime is 252440179. The reversal of 252440143 is 341044252.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 252440143 - 2¹ = 252440141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252440141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411505 + ... + 412117.

It is an arithmetic number, because the mean of its divisors is an integer number (16540546).

Almost surely, 2^252440143 is an apocalyptic number.

252440143 is a deficient number, since it is larger than the sum of its proper divisors (12208593).

252440143 is a wasteful number, since it uses less digits than its factorization.

252440143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 252440143 is about 15888.3650197243. The cubic root of 252440143 is about 632.0034841647.

Adding to 252440143 its reverse (341044252), we get a palindrome (593484395).

The spelling of 252440143 in words is "two hundred fifty-two million, four hundred forty thousand, one hundred forty-three".