123042504131 has 2 divisors, whose sum is σ = 123042504132. Its totient is φ = 123042504130.

The previous prime is 123042504121. The next prime is 123042504133. The reversal of 123042504131 is 131405240321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123042504131 - 2¹⁰ = 123042503107 is a prime.

It is a super-2 number, since 2×123042504131² (a number of 23 digits) contains 22 as substring.

Together with 123042504133, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123042504131.

It is not a weakly prime, because it can be changed into another prime (123042504133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61521252065 + 61521252066.

It is an arithmetic number, because the mean of its divisors is an integer number (61521252066).

Almost surely, 2^123042504131 is an apocalyptic number.

123042504131 is a deficient number, since it is larger than the sum of its proper divisors (1).

123042504131 is an equidigital number, since it uses as much as digits as its factorization.

123042504131 is an evil number, because the sum of its binary digits is even.

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

Adding to 123042504131 its reverse (131405240321), we get a palindrome (254447744452).

The spelling of 123042504131 in words is "one hundred twenty-three billion, forty-two million, five hundred four thousand, one hundred thirty-one".