123743443 has 4 divisors (see below), whose sum is σ = 124563088. Its totient is φ = 122923800.

The previous prime is 123743437. The next prime is 123743461. The reversal of 123743443 is 344347321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344347321 = 8861 ⋅38861.

It is a cyclic number.

It is not a de Polignac number, because 123743443 - 2¹⁷ = 123612371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123740443) 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, 409596 + ... + 409897.

It is an arithmetic number, because the mean of its divisors is an integer number (31140772).

Almost surely, 2^123743443 is an apocalyptic number.

123743443 is a deficient number, since it is larger than the sum of its proper divisors (819645).

123743443 is an equidigital number, since it uses as much as digits as its factorization.

123743443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819644.

The product of its digits is 24192, while the sum is 31.

The square root of 123743443 is about 11124.0030115062. The cubic root of 123743443 is about 498.3189451097.

The spelling of 123743443 in words is "one hundred twenty-three million, seven hundred forty-three thousand, four hundred forty-three".