2142251252 has 6 divisors (see below), whose sum is σ = 3748939698. Its totient is φ = 1071125624.

The previous prime is 2142251227. The next prime is 2142251281. The reversal of 2142251252 is 2521522412.

It can be written as a sum of positive squares in only one way, i.e., 2130376336 + 11874916 = 46156^2 + 3446^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267781403 + ... + 267781410.

It is an arithmetic number, because the mean of its divisors is an integer number (624823283).

Almost surely, 2^2142251252 is an apocalyptic number.

It is an amenable number.

2142251252 is a deficient number, since it is larger than the sum of its proper divisors (1606688446).

2142251252 is a wasteful number, since it uses less digits than its factorization.

2142251252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535562817 (or 535562815 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 2142251252 is about 46284.4601567308. The cubic root of 2142251252 is about 1289.1104682213.

Adding to 2142251252 its reverse (2521522412), we get a palindrome (4663773664).

The spelling of 2142251252 in words is "two billion, one hundred forty-two million, two hundred fifty-one thousand, two hundred fifty-two".