123100427 has 2 divisors, whose sum is σ = 123100428. Its totient is φ = 123100426.

The previous prime is 123100423. The next prime is 123100441. The reversal of 123100427 is 724001321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123100427 - 2² = 123100423 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 123100399 and 123100408.

It is not a weakly prime, because it can be changed into another prime (123100423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61550213 + 61550214.

It is an arithmetic number, because the mean of its divisors is an integer number (61550214).

Almost surely, 2^123100427 is an apocalyptic number.

123100427 is a deficient number, since it is larger than the sum of its proper divisors (1).

123100427 is an equidigital number, since it uses as much as digits as its factorization.

123100427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 123100427 is about 11095.0631814334. The cubic root of 123100427 is about 497.4542967872.

Adding to 123100427 its reverse (724001321), we get a palindrome (847101748).

The spelling of 123100427 in words is "one hundred twenty-three million, one hundred thousand, four hundred twenty-seven".