138340294 has 8 divisors (see below), whose sum is σ = 207664848. Its totient is φ = 69118680.

The previous prime is 138340289. The next prime is 138340313. The reversal of 138340294 is 492043831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22282 + ... + 27805.

It is an arithmetic number, because the mean of its divisors is an integer number (25958106).

Almost surely, 2^138340294 is an apocalyptic number.

138340294 is a deficient number, since it is larger than the sum of its proper divisors (69324554).

138340294 is a wasteful number, since it uses less digits than its factorization.

138340294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51470.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 138340294 is about 11761.8150810153. The cubic root of 138340294 is about 517.1893398662.

The spelling of 138340294 in words is "one hundred thirty-eight million, three hundred forty thousand, two hundred ninety-four".