1120999 has 8 divisors (see below), whose sum is σ = 1236240. Its totient is φ = 1008000.

The previous prime is 1120993. The next prime is 1121011. The reversal of 1120999 is 9990211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1120999 - 2⁷ = 1120871 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1120999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607 + ... + 1615.

It is an arithmetic number, because the mean of its divisors is an integer number (154530).

2^1120999 is an apocalyptic number.

1120999 is a deficient number, since it is larger than the sum of its proper divisors (115241).

1120999 is a wasteful number, since it uses less digits than its factorization.

1120999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121.

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 1120999 is about 1058.7724023604. The cubic root of 1120999 is about 103.8807496565.

The spelling of 1120999 in words is "one million, one hundred twenty thousand, nine hundred ninety-nine".