139741 has 4 divisors (see below), whose sum is σ = 159712. Its totient is φ = 119772.

The previous prime is 139739. The next prime is 139747. The reversal of 139741 is 147931.

139741 is nontrivially palindromic in base 13.

139741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 139741 - 2¹ = 139739 is a prime.

139741 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139747) 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, 9975 + ... + 9988.

It is an arithmetic number, because the mean of its divisors is an integer number (39928).

2¹³⁹⁷⁴¹ is an apocalyptic number.

It is an amenable number.

139741 is a deficient number, since it is larger than the sum of its proper divisors (19971).

139741 is an equidigital number, since it uses as much as digits as its factorization.

139741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19970.

The product of its digits is 756, while the sum is 25.

The square root of 139741 is about 373.8194751481. The cubic root of 139741 is about 51.8929008720.

The spelling of 139741 in words is "one hundred thirty-nine thousand, seven hundred forty-one".