138232401 has 8 divisors (see below), whose sum is σ = 188596320. Its totient is φ = 90011712.

The previous prime is 138232399. The next prime is 138232411. The reversal of 138232401 is 104232831.

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

It is not a de Polignac number, because 138232401 - 2¹ = 138232399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138232411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535656 + ... + 535913.

It is an arithmetic number, because the mean of its divisors is an integer number (23574540).

Almost surely, 2^138232401 is an apocalyptic number.

It is an amenable number.

138232401 is a deficient number, since it is larger than the sum of its proper divisors (50363919).

138232401 is a wasteful number, since it uses less digits than its factorization.

138232401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071615.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 138232401 is about 11757.2276068808. The cubic root of 138232401 is about 517.0548511579.

The spelling of 138232401 in words is "one hundred thirty-eight million, two hundred thirty-two thousand, four hundred one".