1131162142 has 32 divisors (see below), whose sum is σ = 1868832000. Its totient is φ = 509234880.

The previous prime is 1131162127. The next prime is 1131162181. The reversal of 1131162142 is 2412611311.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1833018 + ... + 1833634.

It is an arithmetic number, because the mean of its divisors is an integer number (58401000).

Almost surely, 2^1131162142 is an apocalyptic number.

1131162142 is a deficient number, since it is larger than the sum of its proper divisors (737669858).

1131162142 is a wasteful number, since it uses less digits than its factorization.

1131162142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296.

The product of its digits is 288, while the sum is 22.

The square root of 1131162142 is about 33632.7540055821. The cubic root of 1131162142 is about 1041.9373841043.

Adding to 1131162142 its reverse (2412611311), we get a palindrome (3543773453).

The spelling of 1131162142 in words is "one billion, one hundred thirty-one million, one hundred sixty-two thousand, one hundred forty-two".