2152139 has 8 divisors (see below), whose sum is σ = 2373168. Its totient is φ = 1935360.

The previous prime is 2152127. The next prime is 2152153. The reversal of 2152139 is 9312512.

2152139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2152139 - 2⁴ = 2152123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2152159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59 + ... + 2075.

It is an arithmetic number, because the mean of its divisors is an integer number (296646).

2^2152139 is an apocalyptic number.

2152139 is a deficient number, since it is larger than the sum of its proper divisors (221029).

2152139 is a wasteful number, since it uses less digits than its factorization.

2152139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2125.

The product of its digits is 540, while the sum is 23.

The square root of 2152139 is about 1467.0170414825. The cubic root of 2152139 is about 129.1090758639.

The spelling of 2152139 in words is "two million, one hundred fifty-two thousand, one hundred thirty-nine".