138022403 has 8 divisors (see below), whose sum is σ = 146646720. Its totient is φ = 129534120.

The previous prime is 138022399. The next prime is 138022411. The reversal of 138022403 is 304220831.

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 138022403 - 2² = 138022399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138022433) 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, 31913 + ... + 35978.

It is an arithmetic number, because the mean of its divisors is an integer number (18330840).

Almost surely, 2^138022403 is an apocalyptic number.

138022403 is a deficient number, since it is larger than the sum of its proper divisors (8624317).

138022403 is a wasteful number, since it uses less digits than its factorization.

138022403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68017.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 138022403 is about 11748.2936207774. The cubic root of 138022403 is about 516.7928876958.

The spelling of 138022403 in words is "one hundred thirty-eight million, twenty-two thousand, four hundred three".