2164042 has 8 divisors (see below), whose sum is σ = 3252996. Its totient is φ = 1079712.

The previous prime is 2164039. The next prime is 2164073. The reversal of 2164042 is 2404612.

It can be written as a sum of positive squares in 2 ways, for example, as 2047761 + 116281 = 1431^2 + 341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 478 + ... + 2134.

2^2164042 is an apocalyptic number.

2164042 is a deficient number, since it is larger than the sum of its proper divisors (1088954).

2164042 is a wasteful number, since it uses less digits than its factorization.

2164042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2312.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2164042 is about 1471.0683192836. The cubic root of 2164042 is about 129.3466628720.

Adding to 2164042 its reverse (2404612), we get a palindrome (4568654).

The spelling of 2164042 in words is "two million, one hundred sixty-four thousand, forty-two".