139743 has 6 divisors (see below), whose sum is σ = 201864. Its totient is φ = 93156.

The previous prime is 139739. The next prime is 139747. The reversal of 139743 is 347931.

It is an interprime number because it is at equal distance from previous prime (139739) and next prime (139747).

It is not a de Polignac number, because 139743 - 2² = 139739 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 7755 + ... + 7772.

It is an arithmetic number, because the mean of its divisors is an integer number (33644).

2¹³⁹⁷⁴³ is an apocalyptic number.

139743 is a deficient number, since it is larger than the sum of its proper divisors (62121).

139743 is a wasteful number, since it uses less digits than its factorization.

139743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15533 (or 15530 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 139743 is about 373.8221502265. The cubic root of 139743 is about 51.8931484379.

The spelling of 139743 in words is "one hundred thirty-nine thousand, seven hundred forty-three".