123154350443 has 4 divisors (see below), whose sum is σ = 123285786120. Its totient is φ = 123022914768.

The previous prime is 123154350433. The next prime is 123154350467. The reversal of 123154350443 is 344053451321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123154350443 - 2⁴ = 123154350427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123154350433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65716433 + ... + 65718306.

It is an arithmetic number, because the mean of its divisors is an integer number (30821446530).

Almost surely, 2^123154350443 is an apocalyptic number.

123154350443 is a deficient number, since it is larger than the sum of its proper divisors (131435677).

123154350443 is an equidigital number, since it uses as much as digits as its factorization.

123154350443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131435676.

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 123154350443 in words is "one hundred twenty-three billion, one hundred fifty-four million, three hundred fifty thousand, four hundred forty-three".