1115125140 has 96 divisors (see below), whose sum is σ = 3185046144. Its totient is φ = 291432960.

The previous prime is 1115125133. The next prime is 1115125157. The reversal of 1115125140 is 415215111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2001742 + ... + 2002298.

It is an arithmetic number, because the mean of its divisors is an integer number (33177564).

Almost surely, 2^1115125140 is an apocalyptic number.

1115125140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1115125140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1592523072).

1115125140 is an abundant number, since it is smaller than the sum of its proper divisors (2069921004).

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

1115125140 is a wasteful number, since it uses less digits than its factorization.

1115125140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177 (or 1175 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 21.

The square root of 1115125140 is about 33393.4894852275. The cubic root of 1115125140 is about 1036.9899218110.

The spelling of 1115125140 in words is "one billion, one hundred fifteen million, one hundred twenty-five thousand, one hundred forty".