123605747273 has 4 divisors (see below), whose sum is σ = 123645507780. Its totient is φ = 123565986768.

The previous prime is 123605747249. The next prime is 123605747311. The reversal of 123605747273 is 372747506321.

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 33126912064 + 90478835209 = 182008^2 + 300797^2 .

It is a cyclic number.

It is not a de Polignac number, because 123605747273 - 2¹⁴ = 123605730889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123605747203) 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, 19875590 + ... + 19881807.

It is an arithmetic number, because the mean of its divisors is an integer number (30911376945).

Almost surely, 2^123605747273 is an apocalyptic number.

It is an amenable number.

123605747273 is a deficient number, since it is larger than the sum of its proper divisors (39760507).

123605747273 is an equidigital number, since it uses as much as digits as its factorization.

123605747273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39760506.

The product of its (nonzero) digits is 1481760, while the sum is 47.

The spelling of 123605747273 in words is "one hundred twenty-three billion, six hundred five million, seven hundred forty-seven thousand, two hundred seventy-three".