1252318137 has 48 divisors (see below), whose sum is σ = 1973422080. Its totient is φ = 704283552.

The previous prime is 1252318117. The next prime is 1252318147. The reversal of 1252318137 is 7318132521.

It is a happy number.

It is not a de Polignac number, because 1252318137 - 2¹¹ = 1252316089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1252318098 and 1252318107.

It is not an unprimeable number, because it can be changed into a prime (1252318117) by changing a digit.

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 in 47 ways as a sum of consecutive naturals, for example, 3412128 + ... + 3412494.

It is an arithmetic number, because the mean of its divisors is an integer number (41112960).

Almost surely, 2^1252318137 is an apocalyptic number.

It is an amenable number.

1252318137 is a deficient number, since it is larger than the sum of its proper divisors (721103943).

1252318137 is a wasteful number, since it uses less digits than its factorization.

1252318137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 683 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 1252318137 is about 35388.1072819669. The cubic root of 1252318137 is about 1077.8828371007.

The spelling of 1252318137 in words is "one billion, two hundred fifty-two million, three hundred eighteen thousand, one hundred thirty-seven".