123226451 has 2 divisors, whose sum is σ = 123226452. Its totient is φ = 123226450.

The previous prime is 123226417. The next prime is 123226469. The reversal of 123226451 is 154622321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123226451 - 2¹⁸ = 122964307 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123226451.

It is not a weakly prime, because it can be changed into another prime (123226471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61613225 + 61613226.

It is an arithmetic number, because the mean of its divisors is an integer number (61613226).

Almost surely, 2^123226451 is an apocalyptic number.

123226451 is a deficient number, since it is larger than the sum of its proper divisors (1).

123226451 is an equidigital number, since it uses as much as digits as its factorization.

123226451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 26.

The square root of 123226451 is about 11100.7410113019. The cubic root of 123226451 is about 497.6239950860.

Adding to 123226451 its reverse (154622321), we get a palindrome (277848772).

The spelling of 123226451 in words is "one hundred twenty-three million, two hundred twenty-six thousand, four hundred fifty-one".