252143642 has 8 divisors (see below), whose sum is σ = 398121600. Its totient is φ = 119436444.

The previous prime is 252143627. The next prime is 252143651. The reversal of 252143642 is 246341252.

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

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 3 ways as a sum of consecutive naturals, for example, 3317642 + ... + 3317717.

It is an arithmetic number, because the mean of its divisors is an integer number (49765200).

Almost surely, 2^252143642 is an apocalyptic number.

252143642 is a deficient number, since it is larger than the sum of its proper divisors (145977958).

252143642 is a wasteful number, since it uses less digits than its factorization.

252143642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6635380.

The product of its digits is 11520, while the sum is 29.

The square root of 252143642 is about 15879.0315195858. The cubic root of 252143642 is about 631.7559494735.

Adding to 252143642 its reverse (246341252), we get a palindrome (498484894).

The spelling of 252143642 in words is "two hundred fifty-two million, one hundred forty-three thousand, six hundred forty-two".