123445427 has 16 divisors (see below), whose sum is σ = 144469440. Its totient is φ = 103289472.

The previous prime is 123445411. The next prime is 123445429. The reversal of 123445427 is 724544321.

It is a cyclic number.

It is not a de Polignac number, because 123445427 - 2⁴ = 123445411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123445393 and 123445402.

It is not an unprimeable number, because it can be changed into a prime (123445429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84233 + ... + 85685.

It is an arithmetic number, because the mean of its divisors is an integer number (9029340).

Almost surely, 2^123445427 is an apocalyptic number.

123445427 is a deficient number, since it is larger than the sum of its proper divisors (21024013).

123445427 is a wasteful number, since it uses less digits than its factorization.

123445427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742.

The product of its digits is 26880, while the sum is 32.

The square root of 123445427 is about 11110.5997587889. The cubic root of 123445427 is about 497.9185834332.

Adding to 123445427 its reverse (724544321), we get a palindrome (847989748).

It can be divided in two parts, 12344 and 5427, that added together give a palindrome (17771).

The spelling of 123445427 in words is "one hundred twenty-three million, four hundred forty-five thousand, four hundred twenty-seven".