1125142540 has 12 divisors (see below), whose sum is σ = 2362799376. Its totient is φ = 450057008.

The previous prime is 1125142523. The next prime is 1125142553. The reversal of 1125142540 is 452415211.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28128544 + ... + 28128583.

It is an arithmetic number, because the mean of its divisors is an integer number (196899948).

Almost surely, 2^1125142540 is an apocalyptic number.

1125142540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125142540 is an abundant number, since it is smaller than the sum of its proper divisors (1237656836).

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

1125142540 is a wasteful number, since it uses less digits than its factorization.

1125142540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56257136 (or 56257134 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1125142540 is about 33543.1444560584. The cubic root of 1125142540 is about 1040.0858348781.

Adding to 1125142540 its reverse (452415211), we get a palindrome (1577557751).

The spelling of 1125142540 in words is "one billion, one hundred twenty-five million, one hundred forty-two thousand, five hundred forty".