123243210145 has 16 divisors (see below), whose sum is σ = 161351951040. Its totient is φ = 89622878400.

The previous prime is 123243210137. The next prime is 123243210151. The reversal of 123243210145 is 541012342321.

It is not a de Polignac number, because 123243210145 - 2³ = 123243210137 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 15 ways as a sum of consecutive naturals, for example, 506935 + ... + 709555.

It is an arithmetic number, because the mean of its divisors is an integer number (10084496940).

Almost surely, 2^123243210145 is an apocalyptic number.

It is an amenable number.

123243210145 is a deficient number, since it is larger than the sum of its proper divisors (38108740895).

123243210145 is a wasteful number, since it uses less digits than its factorization.

123243210145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213696.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 123243210145 its reverse (541012342321), we get a palindrome (664255552466).

The spelling of 123243210145 in words is "one hundred twenty-three billion, two hundred forty-three million, two hundred ten thousand, one hundred forty-five".