123405530054245 has 8 divisors (see below), whose sum is σ = 148104623073816. Its totient is φ = 98712432704256.

The previous prime is 123405530054237. The next prime is 123405530054311. The reversal of 123405530054245 is 542450035504321.

It can be written as a sum of positive squares in 4 ways, for example, as 8161483362561 + 115244046691684 = 2856831^2 + 10735178^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123405530054245 - 2³ = 123405530054237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1498872112 + ... + 1498954441.

It is an arithmetic number, because the mean of its divisors is an integer number (18513077884227).

Almost surely, 2^{123405530054245} is an apocalyptic number.

It is an amenable number.

123405530054245 is a deficient number, since it is larger than the sum of its proper divisors (24699093019571).

123405530054245 is an equidigital number, since it uses as much as digits as its factorization.

123405530054245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997834791.

The product of its (nonzero) digits is 1440000, while the sum is 43.

Adding to 123405530054245 its reverse (542450035504321), we get a palindrome (665855565558566).

The spelling of 123405530054245 in words is "one hundred twenty-three trillion, four hundred five billion, five hundred thirty million, fifty-four thousand, two hundred forty-five".