1125987312 has 40 divisors (see below), whose sum is σ = 2910148560. Its totient is φ = 375155200.

The previous prime is 1125987307. The next prime is 1125987337. The reversal of 1125987312 is 2137895211.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138562 + ... + 146462.

It is an arithmetic number, because the mean of its divisors is an integer number (72753714).

Almost surely, 2^1125987312 is an apocalyptic number.

1125987312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1125987312 is an abundant number, since it is smaller than the sum of its proper divisors (1784161248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1125987312 is a wasteful number, since it uses less digits than its factorization.

1125987312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10881 (or 10875 counting only the distinct ones).

The product of its digits is 30240, while the sum is 39.

The square root of 1125987312 is about 33555.7344130627. The cubic root of 1125987312 is about 1040.3460731899.

It can be divided in two parts, 11259873 and 12, that added together give a triangular number (11259885 = T₄₇₄₅).

The spelling of 1125987312 in words is "one billion, one hundred twenty-five million, nine hundred eighty-seven thousand, three hundred twelve".