842099 has 16 divisors (see below), whose sum is σ = 967680. Its totient is φ = 728640.

The previous prime is 842089. The next prime is 842111. The reversal of 842099 is 990248.

842099 = T₅₀ + T₅₁ + ... + T₁₇₂.

It is not a de Polignac number, because 842099 - 2¹² = 838003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17894 + ... + 17940.

It is an arithmetic number, because the mean of its divisors is an integer number (60480).

2⁸⁴²⁰⁹⁹ is an apocalyptic number.

842099 is a deficient number, since it is larger than the sum of its proper divisors (125581).

842099 is a wasteful number, since it uses less digits than its factorization.

842099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 842099 is about 917.6595229169. The cubic root of 842099 is about 94.4324050269.

The spelling of 842099 in words is "eight hundred forty-two thousand, ninety-nine".