2116242 has 24 divisors (see below), whose sum is σ = 4640220. Its totient is φ = 696960.

The previous prime is 2116199. The next prime is 2116291. The reversal of 2116242 is 2426112.

It can be written as a sum of positive squares in 2 ways, for example, as 2099601 + 16641 = 1449^2 + 129^2 .

It is a super-3 number, since 3×2116242³ = 28432643702503333464, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 942 + ... + 2262.

2^2116242 is an apocalyptic number.

2116242 is an abundant number, since it is smaller than the sum of its proper divisors (2523978).

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

2116242 is a wasteful number, since it uses less digits than its factorization.

2116242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418 (or 1415 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 2116242 is about 1454.7309029508. The cubic root of 2116242 is about 128.3872144954.

The spelling of 2116242 in words is "two million, one hundred sixteen thousand, two hundred forty-two".