2159442 has 24 divisors (see below), whose sum is σ = 4954716. Its totient is φ = 677376.

The previous prime is 2159419. The next prime is 2159449. The reversal of 2159442 is 2449512.

2159442 is a `hidden beast` number, since 215 + 9 + 442 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1610361 + 549081 = 1269^2 + 741^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3223 + ... + 3834.

2^2159442 is an apocalyptic number.

2159442 is an abundant number, since it is smaller than the sum of its proper divisors (2795274).

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

2159442 is a wasteful number, since it uses less digits than its factorization.

2159442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7082 (or 7079 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 2159442 is about 1469.5039979531. The cubic root of 2159442 is about 129.2549491974.

It can be divided in two parts, 2159 and 442, that added together give a square (2601 = 51²).

The spelling of 2159442 in words is "two million, one hundred fifty-nine thousand, four hundred forty-two".