123300400023541 has 4 divisors (see below), whose sum is σ = 132785046179212. Its totient is φ = 113815753867872.

The previous prime is 123300400023533. The next prime is 123300400023547. The reversal of 123300400023541 is 145320004003321.

It is a happy number.

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 5759112034225 + 117541287989316 = 2399815^2 + 10841646^2 .

It is a cyclic number.

It is not a de Polignac number, because 123300400023541 - 2³ = 123300400023533 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 (123300400023547) 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, 4742323077816 + ... + 4742323077841.

It is an arithmetic number, because the mean of its divisors is an integer number (33196261544803).

Almost surely, 2^{123300400023541} is an apocalyptic number.

It is an amenable number.

123300400023541 is a deficient number, since it is larger than the sum of its proper divisors (9484646155671).

123300400023541 is an equidigital number, since it uses as much as digits as its factorization.

123300400023541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9484646155670.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 123300400023541 its reverse (145320004003321), we get a palindrome (268620404026862).

The spelling of 123300400023541 in words is "one hundred twenty-three trillion, three hundred billion, four hundred million, twenty-three thousand, five hundred forty-one".