1252431122 has 8 divisors (see below), whose sum is σ = 1891255500. Its totient is φ = 622012624.

The previous prime is 1252431097. The next prime is 1252431127. The reversal of 1252431122 is 2211342521.

It can be written as a sum of positive squares in 2 ways, for example, as 1218079801 + 34351321 = 34901^2 + 5861^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1252431127) 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, 2101097 + ... + 2101692.

Almost surely, 2^1252431122 is an apocalyptic number.

1252431122 is a deficient number, since it is larger than the sum of its proper divisors (638824378).

1252431122 is a wasteful number, since it uses less digits than its factorization.

1252431122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4202940.

The product of its digits is 960, while the sum is 23.

The square root of 1252431122 is about 35389.7036155998. The cubic root of 1252431122 is about 1077.9152519018.

Adding to 1252431122 its reverse (2211342521), we get a palindrome (3463773643).

The spelling of 1252431122 in words is "one billion, two hundred fifty-two million, four hundred thirty-one thousand, one hundred twenty-two".