1131455042 has 32 divisors (see below), whose sum is σ = 1776006000. Its totient is φ = 540131328.

The previous prime is 1131455033. The next prime is 1131455053. The reversal of 1131455042 is 2405541311.

It can be written as a sum of positive squares in 8 ways, for example, as 564015001 + 567440041 = 23749^2 + 23821^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 980738 + ... + 981890.

Almost surely, 2^1131455042 is an apocalyptic number.

1131455042 is a deficient number, since it is larger than the sum of its proper divisors (644550958).

1131455042 is a wasteful number, since it uses less digits than its factorization.

1131455042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1131455042 is about 33637.1081099431. The cubic root of 1131455042 is about 1042.0273084724.

Adding to 1131455042 its reverse (2405541311), we get a palindrome (3536996353).

The spelling of 1131455042 in words is "one billion, one hundred thirty-one million, four hundred fifty-five thousand, forty-two".