252420849 has 6 divisors (see below), whose sum is σ = 364607906. Its totient is φ = 168280560.

The previous prime is 252420841. The next prime is 252420851. The reversal of 252420849 is 948024252.

It can be written as a sum of positive squares in only one way, i.e., 201441249 + 50979600 = 14193^2 + 7140^2 .

It is not a de Polignac number, because 252420849 - 2³ = 252420841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252420841) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14023372 + ... + 14023389.

Almost surely, 2^252420849 is an apocalyptic number.

It is an amenable number.

252420849 is a deficient number, since it is larger than the sum of its proper divisors (112187057).

252420849 is a wasteful number, since it uses less digits than its factorization.

252420849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28046767 (or 28046764 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 252420849 is about 15887.7578342572. The cubic root of 252420849 is about 631.9873824125.

The spelling of 252420849 in words is "two hundred fifty-two million, four hundred twenty thousand, eight hundred forty-nine".