123220124340424 has 32 divisors (see below), whose sum is σ = 235444135968000. Its totient is φ = 60439381496512.

The previous prime is 123220124340421. The next prime is 123220124340427. The reversal of 123220124340424 is 424043421022321.

It is an interprime number because it is at equal distance from previous prime (123220124340421) and next prime (123220124340427).

It is a super-2 number, since 2×123220124340424² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123220124340424.

It is not an unprimeable number, because it can be changed into a prime (123220124340421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272278699 + ... + 272730874.

It is an arithmetic number, because the mean of its divisors is an integer number (7357629249000).

Almost surely, 2^{123220124340424} is an apocalyptic number.

It is an amenable number.

123220124340424 is a deficient number, since it is larger than the sum of its proper divisors (112224011627576).

123220124340424 is a wasteful number, since it uses less digits than its factorization.

123220124340424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545010117 (or 545010113 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 123220124340424 its reverse (424043421022321), we get a palindrome (547263545362745).

The spelling of 123220124340424 in words is "one hundred twenty-three trillion, two hundred twenty billion, one hundred twenty-four million, three hundred forty thousand, four hundred twenty-four".