123666042276 has 48 divisors (see below), whose sum is σ = 366417905280. Its totient is φ = 35333154720.

The previous prime is 123666042251. The next prime is 123666042287. The reversal of 123666042276 is 672240666321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81788955 + ... + 81790466.

It is an arithmetic number, because the mean of its divisors is an integer number (7633706360).

Almost surely, 2^123666042276 is an apocalyptic number.

It is an amenable number.

123666042276 is an abundant number, since it is smaller than the sum of its proper divisors (242751863004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123666042276 is a wasteful number, since it uses less digits than its factorization.

123666042276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163579441 (or 163579433 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 123666042276 in words is "one hundred twenty-three billion, six hundred sixty-six million, forty-two thousand, two hundred seventy-six".