252043421 has 8 divisors (see below), whose sum is σ = 290153280. Its totient is φ = 214459488.

The previous prime is 252043381. The next prime is 252043427. The reversal of 252043421 is 124340252.

It is a happy number.

252043421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252043421 - 2¹⁰ = 252042397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252043427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130451 + ... + 132368.

It is an arithmetic number, because the mean of its divisors is an integer number (36269160).

Almost surely, 2^252043421 is an apocalyptic number.

It is an amenable number.

252043421 is a deficient number, since it is larger than the sum of its proper divisors (38109859).

252043421 is a wasteful number, since it uses less digits than its factorization.

252043421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262963.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 252043421 is about 15875.8754404285. The cubic root of 252043421 is about 631.6722358105.

Adding to 252043421 its reverse (124340252), we get a palindrome (376383673).

The spelling of 252043421 in words is "two hundred fifty-two million, forty-three thousand, four hundred twenty-one".