102739 has 8 divisors (see below), whose sum is σ = 126560. Its totient is φ = 81216.

The previous prime is 102701. The next prime is 102761. The reversal of 102739 is 937201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102739 - 2⁷ = 102611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474 + ... + 655.

It is an arithmetic number, because the mean of its divisors is an integer number (15820).

2¹⁰²⁷³⁹ is an apocalyptic number.

102739 is a deficient number, since it is larger than the sum of its proper divisors (23821).

102739 is a wasteful number, since it uses less digits than its factorization.

102739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 102739 is about 320.5292498353. The cubic root of 102739 is about 46.8358541327.

It can be divided in two parts, 102 and 739, that added together give a square (841 = 29²).

The spelling of 102739 in words is "one hundred two thousand, seven hundred thirty-nine".