138112005 has 8 divisors (see below), whose sum is σ = 220979232. Its totient is φ = 73659728.

The previous prime is 138111989. The next prime is 138112027. The reversal of 138112005 is 500211831.

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 138112005 - 2⁴ = 138111989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4603719 + ... + 4603748.

It is an arithmetic number, because the mean of its divisors is an integer number (27622404).

Almost surely, 2^138112005 is an apocalyptic number.

138112005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138112005 is a deficient number, since it is larger than the sum of its proper divisors (82867227).

138112005 is an equidigital number, since it uses as much as digits as its factorization.

138112005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9207475.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 138112005 is about 11752.1064069383. The cubic root of 138112005 is about 516.9046948097.

Adding to 138112005 its reverse (500211831), we get a palindrome (638323836).

The spelling of 138112005 in words is "one hundred thirty-eight million, one hundred twelve thousand, five".