138342275 has 6 divisors (see below), whose sum is σ = 171544452. Its totient is φ = 110673800.

The previous prime is 138342271. The next prime is 138342283. The reversal of 138342275 is 572243831.

It is not a de Polignac number, because 138342275 - 2² = 138342271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138342271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2766821 + ... + 2766870.

It is an arithmetic number, because the mean of its divisors is an integer number (28590742).

Almost surely, 2^138342275 is an apocalyptic number.

138342275 is a deficient number, since it is larger than the sum of its proper divisors (33202177).

138342275 is an equidigital number, since it uses as much as digits as its factorization.

138342275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5533701 (or 5533696 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 138342275 is about 11761.8992939066. The cubic root of 138342275 is about 517.1918085304.

The spelling of 138342275 in words is "one hundred thirty-eight million, three hundred forty-two thousand, two hundred seventy-five".