123430445 has 8 divisors (see below), whose sum is σ = 148440600. Its totient is φ = 98528320.

The previous prime is 123430429. The next prime is 123430477. The reversal of 123430445 is 544034321.

It can be written as a sum of positive squares in 4 ways, for example, as 1857769 + 121572676 = 1363^2 + 11026^2 .

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

It is not a de Polignac number, because 123430445 - 2⁴ = 123430429 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24470 + ... + 29079.

It is an arithmetic number, because the mean of its divisors is an integer number (18555075).

Almost surely, 2^123430445 is an apocalyptic number.

It is an amenable number.

123430445 is a deficient number, since it is larger than the sum of its proper divisors (25010155).

123430445 is an equidigital number, since it uses as much as digits as its factorization.

123430445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54015.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 123430445 is about 11109.9255173021. The cubic root of 123430445 is about 497.8984392605.

Adding to 123430445 its reverse (544034321), we get a palindrome (667464766).

The spelling of 123430445 in words is "one hundred twenty-three million, four hundred thirty thousand, four hundred forty-five".