138482542 has 16 divisors (see below), whose sum is σ = 226841472. Its totient is φ = 62881720.

The previous prime is 138482479. The next prime is 138482551. The reversal of 138482542 is 245284831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 23463 + ... + 28765.

It is an arithmetic number, because the mean of its divisors is an integer number (14177592).

Almost surely, 2^138482542 is an apocalyptic number.

138482542 is a deficient number, since it is larger than the sum of its proper divisors (88358930).

138482542 is a wasteful number, since it uses less digits than its factorization.

138482542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6503.

The product of its digits is 61440, while the sum is 37.

The square root of 138482542 is about 11767.8605532187. The cubic root of 138482542 is about 517.3665452818.

The spelling of 138482542 in words is "one hundred thirty-eight million, four hundred eighty-two thousand, five hundred forty-two".