13720123126 has 8 divisors (see below), whose sum is σ = 21289846320. Its totient is φ = 6623507688.

The previous prime is 13720123121. The next prime is 13720123129. The reversal of 13720123126 is 62132102731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13720123094 and 13720123103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13720123121) 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 3 ways as a sum of consecutive naturals, for example, 118276866 + ... + 118276981.

It is an arithmetic number, because the mean of its divisors is an integer number (2661230790).

Almost surely, 2^13720123126 is an apocalyptic number.

13720123126 is a deficient number, since it is larger than the sum of its proper divisors (7569723194).

13720123126 is a wasteful number, since it uses less digits than its factorization.

13720123126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236553878.

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 13720123126 its reverse (62132102731), we get a palindrome (75852225857).

The spelling of 13720123126 in words is "thirteen billion, seven hundred twenty million, one hundred twenty-three thousand, one hundred twenty-six".