252143040 has 56 divisors (see below), whose sum is σ = 800557200. Its totient is φ = 67237888.

The previous prime is 252143029. The next prime is 252143083. The reversal of 252143040 is 40341252.

It is a super-2 number, since 2×252143040² = 127152225240883200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 252142998 and 252143016.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 130365 + ... + 132284.

Almost surely, 2^252143040 is an apocalyptic number.

252143040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252143040 is an abundant number, since it is smaller than the sum of its proper divisors (548414160).

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

252143040 is a wasteful number, since it uses less digits than its factorization.

252143040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262669 (or 262659 counting only the distinct ones).

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

The square root of 252143040 is about 15879.0125637585. The cubic root of 252143040 is about 631.7554466948.

Adding to 252143040 its reverse (40341252), we get a palindrome (292484292).

The spelling of 252143040 in words is "two hundred fifty-two million, one hundred forty-three thousand, forty".