123601943 has 4 divisors (see below), whose sum is σ = 123661920. Its totient is φ = 123541968.

The previous prime is 123601939. The next prime is 123601949. The reversal of 123601943 is 349106321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 349106321 = 29 ⋅12038149.

It is a cyclic number.

It is not a de Polignac number, because 123601943 - 2² = 123601939 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123601949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26783 + ... + 31056.

It is an arithmetic number, because the mean of its divisors is an integer number (30915480).

Almost surely, 2^123601943 is an apocalyptic number.

123601943 is a deficient number, since it is larger than the sum of its proper divisors (59977).

123601943 is an equidigital number, since it uses as much as digits as its factorization.

123601943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59976.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 123601943 is about 11117.6410717382. The cubic root of 123601943 is about 498.1289309350.

The spelling of 123601943 in words is "one hundred twenty-three million, six hundred one thousand, nine hundred forty-three".