252424121 has 8 divisors (see below), whose sum is σ = 254550504. Its totient is φ = 250306560.

The previous prime is 252424111. The next prime is 252424157. The reversal of 252424121 is 121424252.

It can be written as a sum of positive squares in 4 ways, for example, as 10310521 + 242113600 = 3211^2 + 15560^2 .

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 252424121 - 2¹⁰ = 252423097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (252424111) 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, 63101 + ... + 66981.

It is an arithmetic number, because the mean of its divisors is an integer number (31818813).

Almost surely, 2^252424121 is an apocalyptic number.

It is an amenable number.

252424121 is a deficient number, since it is larger than the sum of its proper divisors (2126383).

252424121 is a wasteful number, since it uses less digits than its factorization.

252424121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4411.

The product of its digits is 1280, while the sum is 23.

The square root of 252424121 is about 15887.8608062886. The cubic root of 252424121 is about 631.9901131084.

Adding to 252424121 its reverse (121424252), we get a palindrome (373848373).

The spelling of 252424121 in words is "two hundred fifty-two million, four hundred twenty-four thousand, one hundred twenty-one".