1121859 has 12 divisors (see below), whose sum is σ = 1673152. Its totient is φ = 723600.

The previous prime is 1121839. The next prime is 1121867. The reversal of 1121859 is 9581211.

It is not a de Polignac number, because 1121859 - 2⁹ = 1121347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1732 + ... + 2289.

2^1121859 is an apocalyptic number.

1121859 is a deficient number, since it is larger than the sum of its proper divisors (551293).

1121859 is a wasteful number, since it uses less digits than its factorization.

1121859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4058 (or 4055 counting only the distinct ones).

The product of its digits is 720, while the sum is 27.

The square root of 1121859 is about 1059.1784552189. The cubic root of 1121859 is about 103.9073076965.

The spelling of 1121859 in words is "one million, one hundred twenty-one thousand, eight hundred fifty-nine".