138797426 has 8 divisors (see below), whose sum is σ = 208251120. Its totient is φ = 69380388.

The previous prime is 138797389. The next prime is 138797429. The reversal of 138797426 is 624797831.

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

It is not an unprimeable number, because it can be changed into a prime (138797429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4205 + ... + 17183.

It is an arithmetic number, because the mean of its divisors is an integer number (26031390).

Almost surely, 2^138797426 is an apocalyptic number.

138797426 is a deficient number, since it is larger than the sum of its proper divisors (69453694).

138797426 is a wasteful number, since it uses less digits than its factorization.

138797426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18328.

The product of its digits is 508032, while the sum is 47.

The square root of 138797426 is about 11781.2319389782. The cubic root of 138797426 is about 517.7583807782.

The spelling of 138797426 in words is "one hundred thirty-eight million, seven hundred ninety-seven thousand, four hundred twenty-six".