2150139 has 4 divisors (see below), whose sum is σ = 2866856. Its totient is φ = 1433424.

The previous prime is 2150131. The next prime is 2150149. The reversal of 2150139 is 9310512.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2150139 - 2³ = 2150131 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2150131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358354 + ... + 358359.

It is an arithmetic number, because the mean of its divisors is an integer number (716714).

2^2150139 is an apocalyptic number.

2150139 is a deficient number, since it is larger than the sum of its proper divisors (716717).

2150139 is an equidigital number, since it uses as much as digits as its factorization.

2150139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716716.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 2150139 is about 1466.3352277020. The cubic root of 2150139 is about 129.0690694360.

The spelling of 2150139 in words is "two million, one hundred fifty thousand, one hundred thirty-nine".