275220123 has 16 divisors (see below), whose sum is σ = 390573216. Its totient is φ = 171786240.

The previous prime is 275220107. The next prime is 275220151. The reversal of 275220123 is 321022572.

It is a happy number.

It is not a de Polignac number, because 275220123 - 2⁴ = 275220107 is a prime.

It is a super-4 number, since 4×275220123⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 275220093 and 275220102.

It is not an unprimeable number, because it can be changed into a prime (275220103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4138 + ... + 23823.

It is an arithmetic number, because the mean of its divisors is an integer number (24410826).

Almost surely, 2^275220123 is an apocalyptic number.

275220123 is a deficient number, since it is larger than the sum of its proper divisors (115353093).

275220123 is a wasteful number, since it uses less digits than its factorization.

275220123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28174.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 275220123 is about 16589.7595823448. The cubic root of 275220123 is about 650.4691862974.

Adding to 275220123 its reverse (321022572), we get a palindrome (596242695).

The spelling of 275220123 in words is "two hundred seventy-five million, two hundred twenty thousand, one hundred twenty-three".