43121229 has 8 divisors (see below), whose sum is σ = 57525600. Its totient is φ = 28732176.

The previous prime is 43121227. The next prime is 43121233. The reversal of 43121229 is 92212134.

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

It is not a de Polignac number, because 43121229 - 2¹ = 43121227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43121199 and 43121208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43121227) 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, 7719 + ... + 12075.

It is an arithmetic number, because the mean of its divisors is an integer number (7190700).

Almost surely, 2^43121229 is an apocalyptic number.

It is an amenable number.

43121229 is a deficient number, since it is larger than the sum of its proper divisors (14404371).

43121229 is a wasteful number, since it uses less digits than its factorization.

43121229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7659.

The product of its digits is 864, while the sum is 24.

The square root of 43121229 is about 6566.6756429719. The cubic root of 43121229 is about 350.6687323479.

The spelling of 43121229 in words is "forty-three million, one hundred twenty-one thousand, two hundred twenty-nine".