123423738601 has 4 divisors (see below), whose sum is σ = 124162803072. Its totient is φ = 122684674132.

The previous prime is 123423738587. The next prime is 123423738637. The reversal of 123423738601 is 106837324321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123423738601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123423738301) 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, 369531985 + ... + 369532318.

It is an arithmetic number, because the mean of its divisors is an integer number (31040700768).

Almost surely, 2^123423738601 is an apocalyptic number.

It is an amenable number.

123423738601 is a deficient number, since it is larger than the sum of its proper divisors (739064471).

123423738601 is an equidigital number, since it uses as much as digits as its factorization.

123423738601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739064470.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 123423738601 in words is "one hundred twenty-three billion, four hundred twenty-three million, seven hundred thirty-eight thousand, six hundred one".