1131145126 has 16 divisors (see below), whose sum is σ = 1790987760. Its totient is φ = 535799088.

The previous prime is 1131145079. The next prime is 1131145153. The reversal of 1131145126 is 6215411311.

It is a self number, because there is not a number n which added to its sum of digits gives 1131145126.

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, 27511 + ... + 54946.

It is an arithmetic number, because the mean of its divisors is an integer number (111936735).

Almost surely, 2^1131145126 is an apocalyptic number.

1131145126 is a deficient number, since it is larger than the sum of its proper divisors (659842634).

1131145126 is an frugal number, since it uses more digits than its factorization.

1131145126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82516 (or 82478 counting only the distinct ones).

The product of its digits is 720, while the sum is 25.

The square root of 1131145126 is about 33632.5010369434. The cubic root of 1131145126 is about 1041.9321594789.

Adding to 1131145126 its reverse (6215411311), we get a palindrome (7346556437).

The spelling of 1131145126 in words is "one billion, one hundred thirty-one million, one hundred forty-five thousand, one hundred twenty-six".