43343121 has 8 divisors (see below), whose sum is σ = 58352320. Its totient is φ = 28614672.

The previous prime is 43343117. The next prime is 43343129. The reversal of 43343121 is 12134334.

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

It is not a de Polignac number, because 43343121 - 2² = 43343117 is a prime.

It is a super-2 number, since 2×43343121² = 3757252276041282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43343129) 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, 69826 + ... + 70443.

It is an arithmetic number, because the mean of its divisors is an integer number (7294040).

Almost surely, 2^43343121 is an apocalyptic number.

It is an amenable number.

43343121 is a deficient number, since it is larger than the sum of its proper divisors (15009199).

43343121 is a wasteful number, since it uses less digits than its factorization.

43343121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140375.

The product of its digits is 864, while the sum is 21.

The square root of 43343121 is about 6583.5492707202. The cubic root of 43343121 is about 351.2691906622.

Adding to 43343121 its reverse (12134334), we get a palindrome (55477455).

The spelling of 43343121 in words is "forty-three million, three hundred forty-three thousand, one hundred twenty-one".