2163742 has 12 divisors (see below), whose sum is σ = 3775680. Its totient is φ = 927276.

The previous prime is 2163737. The next prime is 2163751. The reversal of 2163742 is 2473612.

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 5 ways as a sum of consecutive naturals, for example, 10942 + ... + 11137.

It is an arithmetic number, because the mean of its divisors is an integer number (314640).

2^2163742 is an apocalyptic number.

2163742 is a deficient number, since it is larger than the sum of its proper divisors (1611938).

2163742 is a wasteful number, since it uses less digits than its factorization.

2163742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22095 (or 22088 counting only the distinct ones).

The product of its digits is 2016, while the sum is 25.

The square root of 2163742 is about 1470.9663490373. The cubic root of 2163742 is about 129.3406855092.

The spelling of 2163742 in words is "two million, one hundred sixty-three thousand, seven hundred forty-two".