43280121 has 8 divisors (see below), whose sum is σ = 59266624. Its totient is φ = 28073520.

The previous prime is 43280117. The next prime is 43280129. The reversal of 43280121 is 12108234.

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

It is not a de Polignac number, because 43280121 - 2² = 43280117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43280129) 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, 194845 + ... + 195066.

It is an arithmetic number, because the mean of its divisors is an integer number (7408328).

Almost surely, 2^43280121 is an apocalyptic number.

It is an amenable number.

43280121 is a deficient number, since it is larger than the sum of its proper divisors (15986503).

43280121 is a wasteful number, since it uses less digits than its factorization.

43280121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389951.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 43280121 is about 6578.7628776237. The cubic root of 43280121 is about 351.0989161237.

Adding to 43280121 its reverse (12108234), we get a palindrome (55388355).

The spelling of 43280121 in words is "forty-three million, two hundred eighty thousand, one hundred twenty-one".