2117042 has 8 divisors (see below), whose sum is σ = 3216000. Its totient is φ = 1045044.

The previous prime is 2117041. The next prime is 2117051. The reversal of 2117042 is 2407112.

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2117042.

It is not an unprimeable number, because it can be changed into a prime (2117041) 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, 6542 + ... + 6857.

It is an arithmetic number, because the mean of its divisors is an integer number (402000).

2^2117042 is an apocalyptic number.

2117042 is a deficient number, since it is larger than the sum of its proper divisors (1098958).

2117042 is a wasteful number, since it uses less digits than its factorization.

2117042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13480.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 2117042 is about 1455.0058419127. The cubic root of 2117042 is about 128.4033904702.

Subtracting from 2117042 its sum of digits (17), we obtain a square (2117025 = 1455²).

It can be divided in two parts, 21170 and 42, that added together give a palindrome (21212).

The spelling of 2117042 in words is "two million, one hundred seventeen thousand, forty-two".