123000445345 has 4 divisors (see below), whose sum is σ = 147600534420. Its totient is φ = 98400356272.

The previous prime is 123000445319. The next prime is 123000445361. The reversal of 123000445345 is 543544000321.

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 85165916224 + 37834529121 = 291832^2 + 194511^2 .

It is a cyclic number.

It is not a de Polignac number, because 123000445345 - 2⁵ = 123000445313 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12300044530 + ... + 12300044539.

It is an arithmetic number, because the mean of its divisors is an integer number (36900133605).

Almost surely, 2^123000445345 is an apocalyptic number.

It is an amenable number.

123000445345 is a deficient number, since it is larger than the sum of its proper divisors (24600089075).

123000445345 is an equidigital number, since it uses as much as digits as its factorization.

123000445345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24600089074.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 123000445345 its reverse (543544000321), we get a palindrome (666544445666).

The spelling of 123000445345 in words is "one hundred twenty-three billion, four hundred forty-five thousand, three hundred forty-five".