123344100424 has 8 divisors (see below), whose sum is σ = 231270188310. Its totient is φ = 61672050208.

The previous prime is 123344100409. The next prime is 123344100427. The reversal of 123344100424 is 424001443321.

It can be written as a sum of positive squares in only one way, i.e., 65992472100 + 57351628324 = 256890^2 + 239482^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 123344100392 and 123344100401.

It is not an unprimeable number, because it can be changed into a prime (123344100427) 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 as a sum of consecutive naturals, namely, 7709006269 + ... + 7709006284.

Almost surely, 2^123344100424 is an apocalyptic number.

It is an amenable number.

123344100424 is a deficient number, since it is larger than the sum of its proper divisors (107926087886).

123344100424 is a wasteful number, since it uses less digits than its factorization.

123344100424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15418012559 (or 15418012555 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 123344100424 its reverse (424001443321), we get a palindrome (547345543745).

The spelling of 123344100424 in words is "one hundred twenty-three billion, three hundred forty-four million, one hundred thousand, four hundred twenty-four".