123420627699 has 8 divisors (see below), whose sum is σ = 164562542592. Its totient is φ = 82279565640.

The previous prime is 123420627679. The next prime is 123420627731. The reversal of 123420627699 is 996726024321.

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

It is not a de Polignac number, because 123420627699 - 2¹² = 123420623603 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (123420627679) 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, 303054 + ... + 581964.

It is an arithmetic number, because the mean of its divisors is an integer number (20570317824).

Almost surely, 2^123420627699 is an apocalyptic number.

123420627699 is a deficient number, since it is larger than the sum of its proper divisors (41141914893).

123420627699 is a wasteful number, since it uses less digits than its factorization.

123420627699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426417.

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 123420627699 in words is "one hundred twenty-three billion, four hundred twenty million, six hundred twenty-seven thousand, six hundred ninety-nine".