138774122 has 8 divisors (see below), whose sum is σ = 208449696. Its totient is φ = 69290892.

The previous prime is 138774121. The next prime is 138774137. The reversal of 138774122 is 221477831.

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

It is not an unprimeable number, because it can be changed into a prime (138774121) 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 3 ways as a sum of consecutive naturals, for example, 46268 + ... + 49175.

It is an arithmetic number, because the mean of its divisors is an integer number (26056212).

Almost surely, 2^138774122 is an apocalyptic number.

138774122 is a deficient number, since it is larger than the sum of its proper divisors (69675574).

138774122 is an equidigital number, since it uses as much as digits as its factorization.

138774122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96172.

The product of its digits is 18816, while the sum is 35.

The square root of 138774122 is about 11780.2428667664. The cubic root of 138774122 is about 517.7294020548.

The spelling of 138774122 in words is "one hundred thirty-eight million, seven hundred seventy-four thousand, one hundred twenty-two".