123041343021 has 32 divisors (see below), whose sum is σ = 173292134400. Its totient is φ = 77439660480.

The previous prime is 123041343001. The next prime is 123041343023. The reversal of 123041343021 is 120343140321.

It is a happy number.

It is not a de Polignac number, because 123041343021 - 2¹¹ = 123041340973 is a prime.

It is a super-2 number, since 2×123041343021² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123041342982 and 123041343000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123041343023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23305060 + ... + 23310338.

It is an arithmetic number, because the mean of its divisors is an integer number (5415379200).

Almost surely, 2^123041343021 is an apocalyptic number.

It is an amenable number.

123041343021 is a deficient number, since it is larger than the sum of its proper divisors (50250791379).

123041343021 is a wasteful number, since it uses less digits than its factorization.

123041343021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6649.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 123041343021 its reverse (120343140321), we get a palindrome (243384483342).

The spelling of 123041343021 in words is "one hundred twenty-three billion, forty-one million, three hundred forty-three thousand, twenty-one".