252140145 has 32 divisors (see below), whose sum is σ = 427901184. Its totient is φ = 126508800.

The previous prime is 252140129. The next prime is 252140159. The reversal of 252140145 is 541041252.

It is not a de Polignac number, because 252140145 - 2⁴ = 252140129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15055 + ... + 27035.

It is an arithmetic number, because the mean of its divisors is an integer number (13371912).

Almost surely, 2^252140145 is an apocalyptic number.

It is an amenable number.

252140145 is a deficient number, since it is larger than the sum of its proper divisors (175761039).

252140145 is a wasteful number, since it uses less digits than its factorization.

252140145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12073.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 252140145 is about 15878.9214054356. The cubic root of 252140145 is about 631.7530288357.

Adding to 252140145 its reverse (541041252), we get a palindrome (793181397).

The spelling of 252140145 in words is "two hundred fifty-two million, one hundred forty thousand, one hundred forty-five".