2140139 has 2 divisors, whose sum is σ = 2140140. Its totient is φ = 2140138.

The previous prime is 2140129. The next prime is 2140157. The reversal of 2140139 is 9310412.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2140139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2140139.

It is not a weakly prime, because it can be changed into another prime (2140109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070069 + 1070070.

It is an arithmetic number, because the mean of its divisors is an integer number (1070070).

2^2140139 is an apocalyptic number.

2140139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140139 is an equidigital number, since it uses as much as digits as its factorization.

2140139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2140139 is about 1462.9213922833. The cubic root of 2140139 is about 128.8686642805.

The spelling of 2140139 in words is "two million, one hundred forty thousand, one hundred thirty-nine".