1131040442 has 32 divisors (see below), whose sum is σ = 1986336000. Its totient is φ = 482811504.

The previous prime is 1131040441. The next prime is 1131040489. The reversal of 1131040442 is 2440401311.

It is not an unprimeable number, because it can be changed into a prime (1131040441) 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, 177284 + ... + 183552.

It is an arithmetic number, because the mean of its divisors is an integer number (62073000).

Almost surely, 2^1131040442 is an apocalyptic number.

1131040442 is a deficient number, since it is larger than the sum of its proper divisors (855295558).

1131040442 is an equidigital number, since it uses as much as digits as its factorization.

1131040442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6555 (or 6541 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1131040442 is about 33630.9447087054. The cubic root of 1131040442 is about 1041.9000159491.

Adding to 1131040442 its reverse (2440401311), we get a palindrome (3571441753).

The spelling of 1131040442 in words is "one billion, one hundred thirty-one million, forty thousand, four hundred forty-two".