252420841 has 2 divisors, whose sum is σ = 252420842. Its totient is φ = 252420840.

The previous prime is 252420829. The next prime is 252420851. The reversal of 252420841 is 148024252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252333225 + 87616 = 15885^2 + 296^2 .

It is a cyclic number.

It is not a de Polignac number, because 252420841 - 2⁷ = 252420713 is a prime.

It is a super-2 number, since 2×252420841² = 127432561942294562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (252420851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126210420 + 126210421.

It is an arithmetic number, because the mean of its divisors is an integer number (126210421).

Almost surely, 2^252420841 is an apocalyptic number.

It is an amenable number.

252420841 is a deficient number, since it is larger than the sum of its proper divisors (1).

252420841 is an equidigital number, since it uses as much as digits as its factorization.

252420841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 252420841 is about 15887.7575824910. The cubic root of 252420841 is about 631.9873757359.

The spelling of 252420841 in words is "two hundred fifty-two million, four hundred twenty thousand, eight hundred forty-one".