123180642841 has 3 divisors (see below), whose sum is σ = 123180993813. Its totient is φ = 123180291870.

The previous prime is 123180642833. The next prime is 123180642887. The reversal of 123180642841 is 148246081321.

The square root of 123180642841 is 350971.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 123180642841 - 2³ = 123180642833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123180642794 and 123180642803.

It is not an unprimeable number, because it can be changed into a prime (123180642811) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 175486 + ... + 526456.

It is an arithmetic number, because the mean of its divisors is an integer number (41060331271).

Almost surely, 2^123180642841 is an apocalyptic number.

123180642841 is the 350971-st square number.

123180642841 is the 175486-th centered octagonal number.

It is an amenable number.

123180642841 is a deficient number, since it is larger than the sum of its proper divisors (350972).

123180642841 is an frugal number, since it uses more digits than its factorization.

123180642841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701942 (or 350971 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 123180642841 in words is "one hundred twenty-three billion, one hundred eighty million, six hundred forty-two thousand, eight hundred forty-one".