123023140541 has 4 divisors (see below), whose sum is σ = 140597874912. Its totient is φ = 105448406172.

The previous prime is 123023140517. The next prime is 123023140549. The reversal of 123023140541 is 145041320321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123023140541 - 2⁶ = 123023140477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123023140541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123023140549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8787367175 + ... + 8787367188.

It is an arithmetic number, because the mean of its divisors is an integer number (35149468728).

Almost surely, 2^123023140541 is an apocalyptic number.

It is an amenable number.

123023140541 is a deficient number, since it is larger than the sum of its proper divisors (17574734371).

123023140541 is an equidigital number, since it uses as much as digits as its factorization.

123023140541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17574734370.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 123023140541 its reverse (145041320321), we get a palindrome (268064460862).

The spelling of 123023140541 in words is "one hundred twenty-three billion, twenty-three million, one hundred forty thousand, five hundred forty-one".