122643423 has 128 divisors (see below), whose sum is σ = 241920000. Its totient is φ = 60963840.

The previous prime is 122643413. The next prime is 122643467. The reversal of 122643423 is 324346221.

122643423 is a `hidden beast` number, since 1 + 226 + 434 + 2 + 3 = 666.

It is not a de Polignac number, because 122643423 - 2⁸ = 122643167 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122643413) 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 127 ways as a sum of consecutive naturals, for example, 2991283 + ... + 2991323.

It is an arithmetic number, because the mean of its divisors is an integer number (1890000).

Almost surely, 2^122643423 is an apocalyptic number.

122643423 is a deficient number, since it is larger than the sum of its proper divisors (119276577).

122643423 is a wasteful number, since it uses less digits than its factorization.

122643423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 87 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 122643423 is about 11074.4491059375. The cubic root of 122643423 is about 496.8379422701.

Adding to 122643423 its reverse (324346221), we get a palindrome (446989644).

It can be divided in two parts, 122 and 643423, that added together give a triangular number (643545 = T₁₁₃₄).

The spelling of 122643423 in words is "one hundred twenty-two million, six hundred forty-three thousand, four hundred twenty-three".