2215942 has 16 divisors (see below), whose sum is σ = 3474432. Its totient is φ = 1058760.

The previous prime is 2215931. The next prime is 2215943. The reversal of 2215942 is 2495122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215943) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6213 + ... + 6559.

It is an arithmetic number, because the mean of its divisors is an integer number (217152).

2^2215942 is an apocalyptic number.

2215942 is a deficient number, since it is larger than the sum of its proper divisors (1258490).

2215942 is a wasteful number, since it uses less digits than its factorization.

2215942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483.

The product of its digits is 1440, while the sum is 25.

The square root of 2215942 is about 1488.6040440628. The cubic root of 2215942 is about 130.3725408577.

It can be divided in two parts, 22159 and 42, that added together give a square (22201 = 149²).

The spelling of 2215942 in words is "two million, two hundred fifteen thousand, nine hundred forty-two".