252197942 has 8 divisors (see below), whose sum is σ = 378737856. Its totient is φ = 125951992.

The previous prime is 252197899. The next prime is 252197947. The reversal of 252197942 is 249791252.

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

It is a self number, because there is not a number n which added to its sum of digits gives 252197942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252197947) by changing a digit.

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, 71333 + ... + 74784.

It is an arithmetic number, because the mean of its divisors is an integer number (47342232).

Almost surely, 2^252197942 is an apocalyptic number.

252197942 is a deficient number, since it is larger than the sum of its proper divisors (126539914).

252197942 is a wasteful number, since it uses less digits than its factorization.

252197942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146982.

The product of its digits is 90720, while the sum is 41.

The square root of 252197942 is about 15880.7412295522. The cubic root of 252197942 is about 631.8012964902.

The spelling of 252197942 in words is "two hundred fifty-two million, one hundred ninety-seven thousand, nine hundred forty-two".