43432121 has 8 divisors (see below), whose sum is σ = 44001984. Its totient is φ = 42865200.

The previous prime is 43432099. The next prime is 43432171. The reversal of 43432121 is 12123434.

43432121 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

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 43432121 - 2⁶ = 43432057 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43432093 and 43432102.

It is not an unprimeable number, because it can be changed into a prime (43432171) 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, 48746 + ... + 49628.

It is an arithmetic number, because the mean of its divisors is an integer number (5500248).

Almost surely, 2^43432121 is an apocalyptic number.

It is an amenable number.

43432121 is a deficient number, since it is larger than the sum of its proper divisors (569863).

43432121 is a wasteful number, since it uses less digits than its factorization.

43432121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471.

The product of its digits is 576, while the sum is 20.

The square root of 43432121 is about 6590.3050763982. The cubic root of 43432121 is about 351.5094562711.

Adding to 43432121 its reverse (12123434), we get a palindrome (55555555).

The spelling of 43432121 in words is "forty-three million, four hundred thirty-two thousand, one hundred twenty-one".