252142101 has 12 divisors (see below), whose sum is σ = 364553280. Its totient is φ = 167934120.

The previous prime is 252142069. The next prime is 252142109. The reversal of 252142101 is 101241252.

252142101 is a `hidden beast` number, since 2 + 521 + 42 + 101 = 666.

It is not a de Polignac number, because 252142101 - 2⁵ = 252142069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252142109) 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 11 ways as a sum of consecutive naturals, for example, 3021 + ... + 22658.

It is an arithmetic number, because the mean of its divisors is an integer number (30379440).

Almost surely, 2^252142101 is an apocalyptic number.

It is an amenable number.

252142101 is a deficient number, since it is larger than the sum of its proper divisors (112411179).

252142101 is a wasteful number, since it uses less digits than its factorization.

252142101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26776 (or 26773 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 252142101 is about 15878.9829964012. The cubic root of 252142101 is about 631.7546624586.

Adding to 252142101 its reverse (101241252), we get a palindrome (353383353).

The spelling of 252142101 in words is "two hundred fifty-two million, one hundred forty-two thousand, one hundred one".