1120990 has 16 divisors (see below), whose sum is σ = 2173248. Its totient is φ = 413856.

The previous prime is 1120969. The next prime is 1120993. The reversal of 1120990 is 990211.

1120990 = T₂₂₀ + T₂₂₁ + ... + T₂₅₈.

It is a plaindrome in base 16.

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, 4182 + ... + 4441.

It is an arithmetic number, because the mean of its divisors is an integer number (135828).

2^1120990 is an apocalyptic number.

1120990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1120990 is a deficient number, since it is larger than the sum of its proper divisors (1052258).

1120990 is a wasteful number, since it uses less digits than its factorization.

1120990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8643.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 1120990 is about 1058.7681521466. The cubic root of 1120990 is about 103.8804716517.

The spelling of 1120990 in words is "one million, one hundred twenty thousand, nine hundred ninety".