123641042267 has 4 divisors (see below), whose sum is σ = 126982692096. Its totient is φ = 120299392440.

The previous prime is 123641042221. The next prime is 123641042269. The reversal of 123641042267 is 762240146321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123641042267 - 2¹⁰ = 123641041243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123641042267.

It is not an unprimeable number, because it can be changed into a prime (123641042269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1670824859 + ... + 1670824932.

It is an arithmetic number, because the mean of its divisors is an integer number (31745673024).

Almost surely, 2^123641042267 is an apocalyptic number.

123641042267 is a deficient number, since it is larger than the sum of its proper divisors (3341649829).

123641042267 is an equidigital number, since it uses as much as digits as its factorization.

123641042267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3341649828.

The product of its (nonzero) digits is 96768, while the sum is 38.

Adding to 123641042267 its reverse (762240146321), we get a palindrome (885881188588).

The spelling of 123641042267 in words is "one hundred twenty-three billion, six hundred forty-one million, forty-two thousand, two hundred sixty-seven".