123042450493 has 12 divisors (see below), whose sum is σ = 129877393788. Its totient is φ = 116550207360.

The previous prime is 123042450439. The next prime is 123042450521. The reversal of 123042450493 is 394054240321.

It can be written as a sum of positive squares in 2 ways, for example, as 27563304484 + 95479146009 = 166022^2 + 308997^2 .

It is a de Polignac number, because none of the positive numbers 2^k-123042450493 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 (123042450413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3136005 + ... + 3174997.

It is an arithmetic number, because the mean of its divisors is an integer number (10823116149).

Almost surely, 2^123042450493 is an apocalyptic number.

It is an amenable number.

123042450493 is a deficient number, since it is larger than the sum of its proper divisors (6834943295).

123042450493 is an equidigital number, since it uses as much as digits as its factorization.

123042450493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47772 (or 47753 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 123042450493 in words is "one hundred twenty-three billion, forty-two million, four hundred fifty thousand, four hundred ninety-three".