138416282 has 4 divisors (see below), whose sum is σ = 207624426. Its totient is φ = 69208140.

The previous prime is 138416279. The next prime is 138416293. The reversal of 138416282 is 282614831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 282614831 = 29 ⋅9745339.

It can be written as a sum of positive squares in only one way, i.e., 121859521 + 16556761 = 11039^2 + 4069^2 .

It is a super-3 number, since 3×138416282³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34604069 + ... + 34604072.

Almost surely, 2^138416282 is an apocalyptic number.

138416282 is a deficient number, since it is larger than the sum of its proper divisors (69208144).

138416282 is an equidigital number, since it uses as much as digits as its factorization.

138416282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69208143.

The product of its digits is 18432, while the sum is 35.

The square root of 138416282 is about 11765.0449212912. The cubic root of 138416282 is about 517.2840170061.

The spelling of 138416282 in words is "one hundred thirty-eight million, four hundred sixteen thousand, two hundred eighty-two".