1099842 has 8 divisors (see below), whose sum is σ = 2199696. Its totient is φ = 366612.

The previous prime is 1099841. The next prime is 1099843. The reversal of 1099842 is 2489901.

It is an interprime number because it is at equal distance from previous prime (1099841) and next prime (1099843).

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

1099842 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1099841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91648 + ... + 91659.

It is an arithmetic number, because the mean of its divisors is an integer number (274962).

2^1099842 is an apocalyptic number.

1099842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1099842 is a wasteful number, since it uses less digits than its factorization.

1099842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183312.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1099842 is about 1048.7335219206. The cubic root of 1099842 is about 103.2230688769.

The spelling of 1099842 in words is "one million, ninety-nine thousand, eight hundred forty-two".