123422655 has 16 divisors (see below), whose sum is σ = 197936640. Its totient is φ = 65671968.

The previous prime is 123422647. The next prime is 123422659. The reversal of 123422655 is 556224321.

It is not a de Polignac number, because 123422655 - 2³ = 123422647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123422659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2787 + ... + 15956.

It is an arithmetic number, because the mean of its divisors is an integer number (12371040).

Almost surely, 2^123422655 is an apocalyptic number.

123422655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123422655 is a deficient number, since it is larger than the sum of its proper divisors (74513985).

123422655 is a wasteful number, since it uses less digits than its factorization.

123422655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19190.

The product of its digits is 14400, while the sum is 30.

The square root of 123422655 is about 11109.5749243614. The cubic root of 123422655 is about 497.8879645070.

Adding to 123422655 its reverse (556224321), we get a palindrome (679646976).

The spelling of 123422655 in words is "one hundred twenty-three million, four hundred twenty-two thousand, six hundred fifty-five".