1121868 has 36 divisors (see below), whose sum is σ = 3094728. Its totient is φ = 339840.

The previous prime is 1121867. The next prime is 1121899. The reversal of 1121868 is 8681211.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1121867) 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, 1021 + ... + 1812.

2^1121868 is an apocalyptic number.

1121868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1121868 is an abundant number, since it is smaller than the sum of its proper divisors (1972860).

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

1121868 is a wasteful number, since it uses less digits than its factorization.

1121868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854 (or 2849 counting only the distinct ones).

The product of its digits is 768, while the sum is 27.

The square root of 1121868 is about 1059.1827037863. The cubic root of 1121868 is about 103.9075855577.

The spelling of 1121868 in words is "one million, one hundred twenty-one thousand, eight hundred sixty-eight".