1123402044 has 48 divisors (see below), whose sum is σ = 2670071040. Its totient is φ = 367543680.

The previous prime is 1123402019. The next prime is 1123402051. The reversal of 1123402044 is 4402043211.

It is a self number, because there is not a number n which added to its sum of digits gives 1123402044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195687 + ... + 201345.

It is an arithmetic number, because the mean of its divisors is an integer number (55626480).

Almost surely, 2^1123402044 is an apocalyptic number.

It is an amenable number.

1123402044 is an abundant number, since it is smaller than the sum of its proper divisors (1546668996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123402044 is a wasteful number, since it uses less digits than its factorization.

1123402044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5970 (or 5968 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1123402044 is about 33517.1902760360. The cubic root of 1123402044 is about 1039.5492511671.

Adding to 1123402044 its reverse (4402043211), we get a palindrome (5525445255).

The spelling of 1123402044 in words is "one billion, one hundred twenty-three million, four hundred two thousand, forty-four".