138754078 has 16 divisors (see below), whose sum is σ = 224188416. Its totient is φ = 64219320.

The previous prime is 138754073. The next prime is 138754087. The reversal of 138754078 is 870457831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138754073) 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, 47226 + ... + 50077.

It is an arithmetic number, because the mean of its divisors is an integer number (14011776).

Almost surely, 2^138754078 is an apocalyptic number.

138754078 is a deficient number, since it is larger than the sum of its proper divisors (85434338).

138754078 is a wasteful number, since it uses less digits than its factorization.

138754078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97359.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 138754078 is about 11779.3920895775. The cubic root of 138754078 is about 517.7044745740.

The spelling of 138754078 in words is "one hundred thirty-eight million, seven hundred fifty-four thousand, seventy-eight".