138124824 has 24 divisors (see below), whose sum is σ = 345456060. Its totient is φ = 46022416.

The previous prime is 138124817. The next prime is 138124829. The reversal of 138124824 is 428421831.

138124824 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138124829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56377 + ... + 58775.

Almost surely, 2^138124824 is an apocalyptic number.

It is an amenable number.

138124824 is an abundant number, since it is smaller than the sum of its proper divisors (207331236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138124824 is an frugal number, since it uses more digits than its factorization.

138124824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4807 (or 2404 counting only the distinct ones).

The product of its digits is 12288, while the sum is 33.

The square root of 138124824 is about 11752.6517858737. The cubic root of 138124824 is about 516.9206866522.

The spelling of 138124824 in words is "one hundred thirty-eight million, one hundred twenty-four thousand, eight hundred twenty-four".