138718143 has 32 divisors (see below), whose sum is σ = 212459520. Its totient is φ = 89385120.

The previous prime is 138718123. The next prime is 138718199. The reversal of 138718143 is 341817831.

It is not a de Polignac number, because 138718143 - 2¹³ = 138709951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138718098 and 138718107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138718123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190446 + ... + 191172.

It is an arithmetic number, because the mean of its divisors is an integer number (6639360).

Almost surely, 2^138718143 is an apocalyptic number.

138718143 is a deficient number, since it is larger than the sum of its proper divisors (73741377).

138718143 is a wasteful number, since it uses less digits than its factorization.

138718143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964 (or 958 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 138718143 is about 11777.8666574215. The cubic root of 138718143 is about 517.6597784305.

The spelling of 138718143 in words is "one hundred thirty-eight million, seven hundred eighteen thousand, one hundred forty-three".