123421336 has 16 divisors (see below), whose sum is σ = 231744240. Its totient is φ = 61622880.

The previous prime is 123421327. The next prime is 123421339. The reversal of 123421336 is 633124321.

It is a self number, because there is not a number n which added to its sum of digits gives 123421336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123421339) 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 in 3 ways as a sum of consecutive naturals, for example, 4795 + ... + 16426.

It is an arithmetic number, because the mean of its divisors is an integer number (14484015).

Almost surely, 2^123421336 is an apocalyptic number.

It is an amenable number.

123421336 is a deficient number, since it is larger than the sum of its proper divisors (108322904).

123421336 is a wasteful number, since it uses less digits than its factorization.

123421336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21954 (or 21950 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

The square root of 123421336 is about 11109.5155609954. The cubic root of 123421336 is about 497.8861908819.

Adding to 123421336 its reverse (633124321), we get a palindrome (756545657).

The spelling of 123421336 in words is "one hundred twenty-three million, four hundred twenty-one thousand, three hundred thirty-six".