2168642 has 12 divisors (see below), whose sum is σ = 3784230. Its totient is φ = 929376.

The previous prime is 2168623. The next prime is 2168651. The reversal of 2168642 is 2468612.

It can be written as a sum of positive squares in only one way, i.e., 1301881 + 866761 = 1141^2 + 931^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10967 + ... + 11162.

2^2168642 is an apocalyptic number.

2168642 is a deficient number, since it is larger than the sum of its proper divisors (1615588).

2168642 is a wasteful number, since it uses less digits than its factorization.

2168642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22145 (or 22138 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 2168642 is about 1472.6309788946. The cubic root of 2168642 is about 129.4382466710.

The spelling of 2168642 in words is "two million, one hundred sixty-eight thousand, six hundred forty-two".