4120139 has 4 divisors (see below), whose sum is σ = 4138056. Its totient is φ = 4102224.

The previous prime is 4120133. The next prime is 4120141. The reversal of 4120139 is 9310214.

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

It is a cyclic number.

It is not a de Polignac number, because 4120139 - 2⁸ = 4119883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4120139.

It is not an unprimeable number, because it can be changed into a prime (4120133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8609 + ... + 9074.

It is an arithmetic number, because the mean of its divisors is an integer number (1034514).

Almost surely, 2^4120139 is an apocalyptic number.

4120139 is a deficient number, since it is larger than the sum of its proper divisors (17917).

4120139 is a wasteful number, since it uses less digits than its factorization.

4120139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17916.

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

The square root of 4120139 is about 2029.8125529221. The cubic root of 4120139 is about 160.3136944675.

The spelling of 4120139 in words is "four million, one hundred twenty thousand, one hundred thirty-nine".