2138139 has 6 divisors (see below), whose sum is σ = 3088436. Its totient is φ = 1425420.

The previous prime is 2138137. The next prime is 2138167. The reversal of 2138139 is 9318312.

It is not a de Polignac number, because 2138139 - 2¹ = 2138137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2138137) 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 5 ways as a sum of consecutive naturals, for example, 118777 + ... + 118794.

2^2138139 is an apocalyptic number.

2138139 is a deficient number, since it is larger than the sum of its proper divisors (950297).

2138139 is a wasteful number, since it uses less digits than its factorization.

2138139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237577 (or 237574 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 2138139 is about 1462.2376687803. The cubic root of 2138139 is about 128.8285083752.

The spelling of 2138139 in words is "two million, one hundred thirty-eight thousand, one hundred thirty-nine".