1116991042 has 4 divisors (see below), whose sum is σ = 1675486566. Its totient is φ = 558495520.

The previous prime is 1116991013. The next prime is 1116991061. The reversal of 1116991042 is 2401996111.

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., 656845641 + 460145401 = 25629^2 + 21451^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1116990989 and 1116991007.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 279247759 + ... + 279247762.

Almost surely, 2^1116991042 is an apocalyptic number.

1116991042 is a deficient number, since it is larger than the sum of its proper divisors (558495524).

1116991042 is an equidigital number, since it uses as much as digits as its factorization.

1116991042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558495523.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 1116991042 is about 33421.4159185394. The cubic root of 1116991042 is about 1037.5679864869.

The spelling of 1116991042 in words is "one billion, one hundred sixteen million, nine hundred ninety-one thousand, forty-two".