1131040142 has 4 divisors (see below), whose sum is σ = 1696560216. Its totient is φ = 565520070.

The previous prime is 1131040133. The next prime is 1131040147. The reversal of 1131040142 is 2410401311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1131040142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131040147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282760034 + ... + 282760037.

It is an arithmetic number, because the mean of its divisors is an integer number (424140054).

Almost surely, 2^1131040142 is an apocalyptic number.

1131040142 is a deficient number, since it is larger than the sum of its proper divisors (565520074).

1131040142 is an equidigital number, since it uses as much as digits as its factorization.

1131040142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565520073.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1131040142 is about 33630.9402485271. The cubic root of 1131040142 is about 1041.8999238304.

Adding to 1131040142 its reverse (2410401311), we get a palindrome (3541441453).

The spelling of 1131040142 in words is "one billion, one hundred thirty-one million, forty thousand, one hundred forty-two".