43412121 has 12 divisors (see below), whose sum is σ = 64729600. Its totient is φ = 28007640.

The previous prime is 43412119. The next prime is 43412143. The reversal of 43412121 is 12121434.

43412121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43412121 - 2¹ = 43412119 is a prime.

It is a super-2 number, since 2×43412121² = 3769224499437282, which contains 22 as substring.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43412094 and 43412103.

It is not an unprimeable number, because it can be changed into a prime (43412191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77521 + ... + 78078.

Almost surely, 2^43412121 is an apocalyptic number.

It is an amenable number.

43412121 is a deficient number, since it is larger than the sum of its proper divisors (21317479).

43412121 is a wasteful number, since it uses less digits than its factorization.

43412121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155636 (or 155633 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 43412121 is about 6588.7875212364. The cubic root of 43412121 is about 351.4554926120.

Adding to 43412121 its reverse (12121434), we get a palindrome (55533555).

It can be divided in two parts, 43 and 412121, that added together give a square (412164 = 642²).

The spelling of 43412121 in words is "forty-three million, four hundred twelve thousand, one hundred twenty-one".