43442923 has 4 divisors (see below), whose sum is σ = 43709608. Its totient is φ = 43176240.

The previous prime is 43442909. The next prime is 43442933. The reversal of 43442923 is 32924434.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43442923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43442933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133098 + ... + 133423.

It is an arithmetic number, because the mean of its divisors is an integer number (10927402).

Almost surely, 2^43442923 is an apocalyptic number.

43442923 is a deficient number, since it is larger than the sum of its proper divisors (266685).

43442923 is a wasteful number, since it uses less digits than its factorization.

43442923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266684.

The product of its digits is 20736, while the sum is 31.

The square root of 43442923 is about 6591.1245626221. The cubic root of 43442923 is about 351.5385951535.

The spelling of 43442923 in words is "forty-three million, four hundred forty-two thousand, nine hundred twenty-three".