123424430212 has 12 divisors (see below), whose sum is σ = 216024027660. Its totient is φ = 61703279456.

The previous prime is 123424430209. The next prime is 123424430221. The reversal of 123424430212 is 212034424321.

It can be written as a sum of positive squares in 2 ways, for example, as 79317709956 + 44106720256 = 281634^2 + 210016^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2202787 + ... + 2258122.

It is an arithmetic number, because the mean of its divisors is an integer number (18002002305).

Almost surely, 2^123424430212 is an apocalyptic number.

It is an amenable number.

123424430212 is a deficient number, since it is larger than the sum of its proper divisors (92599597448).

123424430212 is a wasteful number, since it uses less digits than its factorization.

123424430212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4467830 (or 4467828 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 123424430212 its reverse (212034424321), we get a palindrome (335458854533).

The spelling of 123424430212 in words is "one hundred twenty-three billion, four hundred twenty-four million, four hundred thirty thousand, two hundred twelve".