138043306 has 16 divisors (see below), whose sum is σ = 214502400. Its totient is φ = 66549168.

The previous prime is 138043267. The next prime is 138043307. The reversal of 138043306 is 603340831.

138043306 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (138043307) 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, 60535 + ... + 62773.

It is an arithmetic number, because the mean of its divisors is an integer number (13406400).

Almost surely, 2^138043306 is an apocalyptic number.

138043306 is a deficient number, since it is larger than the sum of its proper divisors (76459094).

138043306 is a wasteful number, since it uses less digits than its factorization.

138043306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 138043306 is about 11749.1832056531. The cubic root of 138043306 is about 516.8189751913.

The spelling of 138043306 in words is "one hundred thirty-eight million, forty-three thousand, three hundred six".