138716423 has 8 divisors (see below), whose sum is σ = 142209648. Its totient is φ = 135255744.

The previous prime is 138716419. The next prime is 138716429. The reversal of 138716423 is 324617831.

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 138716423 - 2² = 138716419 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 (138716429) 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, 611 + ... + 16667.

It is an arithmetic number, because the mean of its divisors is an integer number (17776206).

Almost surely, 2^138716423 is an apocalyptic number.

138716423 is a deficient number, since it is larger than the sum of its proper divisors (3493225).

138716423 is a wasteful number, since it uses less digits than its factorization.

138716423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16273.

The product of its digits is 24192, while the sum is 35.

The square root of 138716423 is about 11777.7936388782. The cubic root of 138716423 is about 517.6576388918.

The spelling of 138716423 in words is "one hundred thirty-eight million, seven hundred sixteen thousand, four hundred twenty-three".