43442423 has 8 divisors (see below), whose sum is σ = 45782496. Its totient is φ = 41140000.

The previous prime is 43442393. The next prime is 43442453. The reversal of 43442423 is 32424434.

It is an interprime number because it is at equal distance from previous prime (43442393) and next prime (43442453).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43442423 - 2⁶ = 43442359 is a prime.

It is a super-2 number, since 2×43442423² = 3774488232221858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43442392 and 43442401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43442453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7028 + ... + 11673.

It is an arithmetic number, because the mean of its divisors is an integer number (5722812).

Almost surely, 2^43442423 is an apocalyptic number.

43442423 is a deficient number, since it is larger than the sum of its proper divisors (2340073).

43442423 is a wasteful number, since it uses less digits than its factorization.

43442423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18825.

The product of its digits is 9216, while the sum is 26.

The square root of 43442423 is about 6591.0866327185. The cubic root of 43442423 is about 351.5372464876.

Adding to 43442423 its reverse (32424434), we get a palindrome (75866857).

The spelling of 43442423 in words is "forty-three million, four hundred forty-two thousand, four hundred twenty-three".