123518873 has 2 divisors, whose sum is σ = 123518874. Its totient is φ = 123518872.

The previous prime is 123518869. The next prime is 123518891. The reversal of 123518873 is 378815321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69172489 + 54346384 = 8317^2 + 7372^2 .

It is an emirp because it is prime and its reverse (378815321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123518873 - 2² = 123518869 is a prime.

It is not a weakly prime, because it can be changed into another prime (123518893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61759436 + 61759437.

It is an arithmetic number, because the mean of its divisors is an integer number (61759437).

Almost surely, 2^123518873 is an apocalyptic number.

It is an amenable number.

123518873 is a deficient number, since it is larger than the sum of its proper divisors (1).

123518873 is an equidigital number, since it uses as much as digits as its factorization.

123518873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 123518873 is about 11113.9044894222. The cubic root of 123518873 is about 498.0173122910.

The spelling of 123518873 in words is "one hundred twenty-three million, five hundred eighteen thousand, eight hundred seventy-three".