2169842 has 8 divisors (see below), whose sum is σ = 3264300. Its totient is φ = 1081744.

The previous prime is 2169841. The next prime is 2169859. The reversal of 2169842 is 2489612.

2169842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2157961 + 11881 = 1469^2 + 109^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2169799 and 2169808.

It is not an unprimeable number, because it can be changed into a prime (2169841) 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 3 ways as a sum of consecutive naturals, for example, 617 + ... + 2172.

2^2169842 is an apocalyptic number.

2169842 is a deficient number, since it is larger than the sum of its proper divisors (1094458).

2169842 is a wasteful number, since it uses less digits than its factorization.

2169842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3180.

The product of its digits is 6912, while the sum is 32.

The square root of 2169842 is about 1473.0383565950. The cubic root of 2169842 is about 129.4621167942.

The spelling of 2169842 in words is "two million, one hundred sixty-nine thousand, eight hundred forty-two".