43121063 has 2 divisors, whose sum is σ = 43121064. Its totient is φ = 43121062.

The previous prime is 43121033. The next prime is 43121081. The reversal of 43121063 is 36012134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43121063 - 2¹⁸ = 42858919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43121033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21560531 + 21560532.

It is an arithmetic number, because the mean of its divisors is an integer number (21560532).

Almost surely, 2^43121063 is an apocalyptic number.

43121063 is a deficient number, since it is larger than the sum of its proper divisors (1).

43121063 is an equidigital number, since it uses as much as digits as its factorization.

43121063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 43121063 is about 6566.6630033831. The cubic root of 43121063 is about 350.6682823678.

Adding to 43121063 its reverse (36012134), we get a palindrome (79133197).

The spelling of 43121063 in words is "forty-three million, one hundred twenty-one thousand, sixty-three".