43032121 has 8 divisors (see below), whose sum is σ = 48036384. Its totient is φ = 38209920.

The previous prime is 43032107. The next prime is 43032127. The reversal of 43032121 is 12123034.

It is a happy number.

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 43032121 - 2¹⁵ = 42999353 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 43032095 and 43032104.

It is not an unprimeable number, because it can be changed into a prime (43032127) 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, 45016 + ... + 45961.

It is an arithmetic number, because the mean of its divisors is an integer number (6004548).

Almost surely, 2^43032121 is an apocalyptic number.

It is an amenable number.

43032121 is a deficient number, since it is larger than the sum of its proper divisors (5004263).

43032121 is a wasteful number, since it uses less digits than its factorization.

43032121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91031.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 43032121 is about 6559.8872703729. The cubic root of 43032121 is about 350.4270189380.

Adding to 43032121 its reverse (12123034), we get a palindrome (55155155).

The spelling of 43032121 in words is "forty-three million, thirty-two thousand, one hundred twenty-one".