138924503 has 4 divisors (see below), whose sum is σ = 138996000. Its totient is φ = 138853008.

The previous prime is 138924497. The next prime is 138924509. The reversal of 138924503 is 305429831.

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

It is an interprime number because it is at equal distance from previous prime (138924497) and next prime (138924509).

It is a cyclic number.

It is not a de Polignac number, because 138924503 - 2²² = 134730199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138924509) 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, 32750 + ... + 36747.

It is an arithmetic number, because the mean of its divisors is an integer number (34749000).

Almost surely, 2^138924503 is an apocalyptic number.

138924503 is a deficient number, since it is larger than the sum of its proper divisors (71497).

138924503 is an equidigital number, since it uses as much as digits as its factorization.

138924503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71496.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 138924503 is about 11786.6239016947. The cubic root of 138924503 is about 517.9163450722.

The spelling of 138924503 in words is "one hundred thirty-eight million, nine hundred twenty-four thousand, five hundred three".