43044121 has 2 divisors, whose sum is σ = 43044122. Its totient is φ = 43044120.

The previous prime is 43044107. The next prime is 43044143. The reversal of 43044121 is 12144034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41744521 + 1299600 = 6461^2 + 1140^2 .

It is a cyclic number.

It is not a de Polignac number, because 43044121 - 2⁷ = 43043993 is a prime.

It is not a weakly prime, because it can be changed into another prime (43044721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21522060 + 21522061.

It is an arithmetic number, because the mean of its divisors is an integer number (21522061).

Almost surely, 2^43044121 is an apocalyptic number.

It is an amenable number.

43044121 is a deficient number, since it is larger than the sum of its proper divisors (1).

43044121 is an equidigital number, since it uses as much as digits as its factorization.

43044121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 43044121 is about 6560.8018564807. The cubic root of 43044121 is about 350.4595894404.

Adding to 43044121 its reverse (12144034), we get a palindrome (55188155).

It can be divided in two parts, 430 and 44121, that added together give a triangular number (44551 = T₂₉₈).

The spelling of 43044121 in words is "forty-three million, forty-four thousand, one hundred twenty-one".