123340414121 has 4 divisors (see below), whose sum is σ = 123341948244. Its totient is φ = 123338880000.

The previous prime is 123340414111. The next prime is 123340414139. The reversal of 123340414121 is 121414043321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 65157667600 + 58182746521 = 255260^2 + 241211^2 .

It is a cyclic number.

It is not a de Polignac number, because 123340414121 - 2²² = 123336219817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123340414111) 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, 639380 + ... + 809621.

It is an arithmetic number, because the mean of its divisors is an integer number (30835487061).

Almost surely, 2^123340414121 is an apocalyptic number.

It is an amenable number.

123340414121 is a deficient number, since it is larger than the sum of its proper divisors (1534123).

123340414121 is an equidigital number, since it uses as much as digits as its factorization.

123340414121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534122.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 123340414121 its reverse (121414043321), we get a palindrome (244754457442).

The spelling of 123340414121 in words is "one hundred twenty-three billion, three hundred forty million, four hundred fourteen thousand, one hundred twenty-one".