1120044155 has 4 divisors (see below), whose sum is σ = 1344052992. Its totient is φ = 896035320.

The previous prime is 1120044143. The next prime is 1120044157. The reversal of 1120044155 is 5514400211.

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

It is not a de Polignac number, because 1120044155 - 2²⁸ = 851608699 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1120044155.

It is not an unprimeable number, because it can be changed into a prime (1120044157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112004411 + ... + 112004420.

It is an arithmetic number, because the mean of its divisors is an integer number (336013248).

Almost surely, 2^1120044155 is an apocalyptic number.

1120044155 is a deficient number, since it is larger than the sum of its proper divisors (224008837).

1120044155 is an equidigital number, since it uses as much as digits as its factorization.

1120044155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224008836.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1120044155 is about 33467.0607463518. The cubic root of 1120044155 is about 1038.5124674871.

Adding to 1120044155 its reverse (5514400211), we get a palindrome (6634444366).

It can be divided in two parts, 11200 and 44155, that added together give a palindrome (55355).

The spelling of 1120044155 in words is "one billion, one hundred twenty million, forty-four thousand, one hundred fifty-five".