123445612 has 12 divisors (see below), whose sum is σ = 216138496. Its totient is φ = 61691760.

The previous prime is 123445601. The next prime is 123445613. The reversal of 123445612 is 216544321.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (123445613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2773 + ... + 15955.

Almost surely, 2^123445612 is an apocalyptic number.

It is an amenable number.

123445612 is a deficient number, since it is larger than the sum of its proper divisors (92692884).

123445612 is a wasteful number, since it uses less digits than its factorization.

123445612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15528 (or 15526 counting only the distinct ones).

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

The square root of 123445612 is about 11110.6080841689. The cubic root of 123445612 is about 497.9188321663.

Adding to 123445612 its reverse (216544321), we get a palindrome (339989933).

It can be divided in two parts, 12344 and 5612, that added together give a square (17956 = 134²).

The spelling of 123445612 in words is "one hundred twenty-three million, four hundred forty-five thousand, six hundred twelve".