123404276 has 6 divisors (see below), whose sum is σ = 215957490. Its totient is φ = 61702136.

The previous prime is 123404263. The next prime is 123404279. The reversal of 123404276 is 672404321.

It can be written as a sum of positive squares in only one way, i.e., 115132900 + 8271376 = 10730^2 + 2876^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123404279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15425531 + ... + 15425538.

It is an arithmetic number, because the mean of its divisors is an integer number (35992915).

Almost surely, 2^123404276 is an apocalyptic number.

It is an amenable number.

123404276 is a deficient number, since it is larger than the sum of its proper divisors (92553214).

123404276 is a wasteful number, since it uses less digits than its factorization.

123404276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30851073 (or 30851071 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 123404276 is about 11108.7477242037. The cubic root of 123404276 is about 497.8632496032.

Adding to 123404276 its reverse (672404321), we get a palindrome (795808597).

The spelling of 123404276 in words is "one hundred twenty-three million, four hundred four thousand, two hundred seventy-six".