123261045041999 has 4 divisors (see below), whose sum is σ = 123261137902920. Its totient is φ = 123260952181080.

The previous prime is 123261045041989. The next prime is 123261045042043. The reversal of 123261045041999 is 999140540162321.

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 123261045041999 - 2⁴ = 123261045041983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123261045041929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44410097 + ... + 47103914.

It is an arithmetic number, because the mean of its divisors is an integer number (30815284475730).

Almost surely, 2^{123261045041999} is an apocalyptic number.

123261045041999 is a deficient number, since it is larger than the sum of its proper divisors (92860921).

123261045041999 is an equidigital number, since it uses as much as digits as its factorization.

123261045041999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92860920.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The spelling of 123261045041999 in words is "one hundred twenty-three trillion, two hundred sixty-one billion, forty-five million, forty-one thousand, nine hundred ninety-nine".