252122142 has 8 divisors (see below), whose sum is σ = 504244296. Its totient is φ = 84040712.

The previous prime is 252122119. The next prime is 252122149. The reversal of 252122142 is 241221252.

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

252122142 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252122149) 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, 21010173 + ... + 21010184.

It is an arithmetic number, because the mean of its divisors is an integer number (63030537).

Almost surely, 2^252122142 is an apocalyptic number.

252122142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

252122142 is a wasteful number, since it uses less digits than its factorization.

252122142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42020362.

The product of its digits is 640, while the sum is 21.

The square root of 252122142 is about 15878.3545117244. The cubic root of 252122142 is about 631.7379925940.

Adding to 252122142 its reverse (241221252), we get a palindrome (493343394).

The spelling of 252122142 in words is "two hundred fifty-two million, one hundred twenty-two thousand, one hundred forty-two".