275123138 has 16 divisors (see below), whose sum is σ = 438848280. Its totient is φ = 128910336.

The previous prime is 275123131. The next prime is 275123141. The reversal of 275123138 is 831321572.

It can be written as a sum of positive squares in 4 ways, for example, as 152201569 + 122921569 = 12337^2 + 11087^2 .

It is a super-3 number, since 3×275123138³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (275123131) 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, 9443 + ... + 25286.

Almost surely, 2^275123138 is an apocalyptic number.

275123138 is a deficient number, since it is larger than the sum of its proper divisors (163725142).

275123138 is a wasteful number, since it uses less digits than its factorization.

275123138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34981.

The product of its digits is 10080, while the sum is 32.

The square root of 275123138 is about 16586.8362866461. The cubic root of 275123138 is about 650.3927708993.

The spelling of 275123138 in words is "two hundred seventy-five million, one hundred twenty-three thousand, one hundred thirty-eight".