252122340 has 96 divisors (see below), whose sum is σ = 729308160. Its totient is φ = 65045376.

The previous prime is 252122309. The next prime is 252122371. The reversal of 252122340 is 43221252.

It is an interprime number because it is at equal distance from previous prime (252122309) and next prime (252122371).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236649 + ... + 237711.

It is an arithmetic number, because the mean of its divisors is an integer number (7596960).

Almost surely, 2^252122340 is an apocalyptic number.

252122340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252122340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364654080).

252122340 is an abundant number, since it is smaller than the sum of its proper divisors (477185820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252122340 is a wasteful number, since it uses less digits than its factorization.

252122340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201 (or 1199 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 252122340 is about 15878.3607466262. The cubic root of 252122340 is about 631.7381579690.

Adding to 252122340 its reverse (43221252), we get a palindrome (295343592).

The spelling of 252122340 in words is "two hundred fifty-two million, one hundred twenty-two thousand, three hundred forty".