1251142484 has 12 divisors (see below), whose sum is σ = 2190822900. Its totient is φ = 625193088.

The previous prime is 1251142481. The next prime is 1251142549. The reversal of 1251142484 is 4842411521.

It can be written as a sum of positive squares in 2 ways, for example, as 935014084 + 316128400 = 30578^2 + 17780^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1251142484.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251142481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87029 + ... + 100380.

It is an arithmetic number, because the mean of its divisors is an integer number (182568575).

Almost surely, 2^1251142484 is an apocalyptic number.

It is an amenable number.

1251142484 is a deficient number, since it is larger than the sum of its proper divisors (939680416).

1251142484 is a wasteful number, since it uses less digits than its factorization.

1251142484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189082 (or 189080 counting only the distinct ones).

The product of its digits is 10240, while the sum is 32.

The square root of 1251142484 is about 35371.4925328293. The cubic root of 1251142484 is about 1077.5454327019.

The spelling of 1251142484 in words is "one billion, two hundred fifty-one million, one hundred forty-two thousand, four hundred eighty-four".