123421266165426 has 8 divisors (see below), whose sum is σ = 246842532330864. Its totient is φ = 41140422055140.

The previous prime is 123421266165419. The next prime is 123421266165427. The reversal of 123421266165426 is 624561662124321.

It is a sphenic number, since it is the product of 3 distinct primes.

123421266165426 is an admirable number.

It is a super-2 number, since 2×123421266165426² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123421266165427) 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, 10285105513780 + ... + 10285105513791.

It is an arithmetic number, because the mean of its divisors is an integer number (30855316541358).

Almost surely, 2^{123421266165426} is an apocalyptic number.

123421266165426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

123421266165426 is a wasteful number, since it uses less digits than its factorization.

123421266165426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20570211027576.

The product of its digits is 4976640, while the sum is 51.

The spelling of 123421266165426 in words is "one hundred twenty-three trillion, four hundred twenty-one billion, two hundred sixty-six million, one hundred sixty-five thousand, four hundred twenty-six".