1131002042 has 4 divisors (see below), whose sum is σ = 1696503066. Its totient is φ = 565501020.

The previous prime is 1131002011. The next prime is 1131002063. The reversal of 1131002042 is 2402001311.

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

It can be written as a sum of positive squares in only one way, i.e., 707506801 + 423495241 = 26599^2 + 20579^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282750509 + ... + 282750512.

Almost surely, 2^1131002042 is an apocalyptic number.

1131002042 is a deficient number, since it is larger than the sum of its proper divisors (565501024).

1131002042 is an equidigital number, since it uses as much as digits as its factorization.

1131002042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565501023.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1131002042 is about 33630.3738010745. The cubic root of 1131002042 is about 1041.8882246191. Note that the first 3 decimals are identical.

Adding to 1131002042 its reverse (2402001311), we get a palindrome (3533003353).

The spelling of 1131002042 in words is "one billion, one hundred thirty-one million, two thousand, forty-two".