138342099 has 16 divisors (see below), whose sum is σ = 211081472. Its totient is φ = 78949728.

The previous prime is 138342067. The next prime is 138342109. The reversal of 138342099 is 990243831.

It is not a de Polignac number, because 138342099 - 2⁵ = 138342067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138342599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14052 + ... + 21774.

It is an arithmetic number, because the mean of its divisors is an integer number (13192592).

Almost surely, 2^138342099 is an apocalyptic number.

138342099 is a deficient number, since it is larger than the sum of its proper divisors (72739373).

138342099 is an equidigital number, since it uses as much as digits as its factorization.

138342099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8586.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 138342099 is about 11761.8918121193. The cubic root of 138342099 is about 517.1915892053.

The spelling of 138342099 in words is "one hundred thirty-eight million, three hundred forty-two thousand, ninety-nine".