1121375120 has 40 divisors (see below), whose sum is σ = 2720558016. Its totient is φ = 429047168.

The previous prime is 1121375089. The next prime is 1121375153. The reversal of 1121375120 is 215731211.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302882 + ... + 306561.

Almost surely, 2^1121375120 is an apocalyptic number.

1121375120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121375120 is an abundant number, since it is smaller than the sum of its proper divisors (1599182896).

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

1121375120 is a wasteful number, since it uses less digits than its factorization.

1121375120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609479 (or 609473 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 1121375120 is about 33486.9395436490. The cubic root of 1121375120 is about 1038.9236645504.

The spelling of 1121375120 in words is "one billion, one hundred twenty-one million, three hundred seventy-five thousand, one hundred twenty".