252400043 has 4 divisors (see below), whose sum is σ = 288457200. Its totient is φ = 216342888.

The previous prime is 252400039. The next prime is 252400061. The reversal of 252400043 is 340004252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 252400043 - 2² = 252400039 is a prime.

It is a super-3 number, since 3×252400043³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252399988 and 252400024.

It is not an unprimeable number, because it can be changed into a prime (252406043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18028568 + ... + 18028581.

It is an arithmetic number, because the mean of its divisors is an integer number (72114300).

Almost surely, 2^252400043 is an apocalyptic number.

252400043 is a deficient number, since it is larger than the sum of its proper divisors (36057157).

252400043 is an equidigital number, since it uses as much as digits as its factorization.

252400043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36057156.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 252400043 is about 15887.1030398874. The cubic root of 252400043 is about 631.9700179055.

Adding to 252400043 its reverse (340004252), we get a palindrome (592404295).

The spelling of 252400043 in words is "two hundred fifty-two million, four hundred thousand, forty-three".