1131142125 has 16 divisors (see below), whose sum is σ = 1882221120. Its totient is φ = 603275600.

The previous prime is 1131142121. The next prime is 1131142147. The reversal of 1131142125 is 5212411311.

It is not a de Polignac number, because 1131142125 - 2² = 1131142121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131142121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1507815 + ... + 1508564.

It is an arithmetic number, because the mean of its divisors is an integer number (117638820).

Almost surely, 2^1131142125 is an apocalyptic number.

1131142125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131142125 is a deficient number, since it is larger than the sum of its proper divisors (751078995).

1131142125 is an equidigital number, since it uses as much as digits as its factorization.

1131142125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016397 (or 3016387 counting only the distinct ones).

The product of its digits is 240, while the sum is 21.

The square root of 1131142125 is about 33632.4564223311. The cubic root of 1131142125 is about 1041.9312380407.

Adding to 1131142125 its reverse (5212411311), we get a palindrome (6343553436).

The spelling of 1131142125 in words is "one billion, one hundred thirty-one million, one hundred forty-two thousand, one hundred twenty-five".