252100140 has 96 divisors (see below), whose sum is σ = 750435840. Its totient is φ = 63015936.

The previous prime is 252100117. The next prime is 252100213. The reversal of 252100140 is 41001252.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 447499 + ... + 448061.

It is an arithmetic number, because the mean of its divisors is an integer number (7817040).

Almost surely, 2^252100140 is an apocalyptic number.

252100140 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 252100140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375217920).

252100140 is an abundant number, since it is smaller than the sum of its proper divisors (498335700).

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

252100140 is a wasteful number, since it uses less digits than its factorization.

252100140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 252100140 is about 15877.6616666309. The cubic root of 252100140 is about 631.7196153853.

Adding to 252100140 its reverse (41001252), we get a palindrome (293101392).

The spelling of 252100140 in words is "two hundred fifty-two million, one hundred thousand, one hundred forty".