139503 has 24 divisors (see below), whose sum is σ = 236208. Its totient is φ = 72576.

The previous prime is 139501. The next prime is 139511. The reversal of 139503 is 305931.

139503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

139503 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 139503 - 2¹ = 139501 is a prime.

It is a super-2 number, since 2×139503² = 38922174018, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is the 374-th Hogben number.

139503 is an undulating number in base 9.

139503 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 139503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139501) by changing a digit.

It is a nontrivial repunit in base 373.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1875 + ... + 1947.

It is an arithmetic number, because the mean of its divisors is an integer number (9842).

2¹³⁹⁵⁰³ is an apocalyptic number.

139503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

139503 is a deficient number, since it is larger than the sum of its proper divisors (96705).

139503 is a wasteful number, since it uses less digits than its factorization.

139503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 139503 is about 373.5010040147. The cubic root of 139503 is about 51.8634236519.

The spelling of 139503 in words is "one hundred thirty-nine thousand, five hundred three".