43121459 has 2 divisors, whose sum is σ = 43121460. Its totient is φ = 43121458.

The previous prime is 43121423. The next prime is 43121467. The reversal of 43121459 is 95412134.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43121459 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43121759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21560729 + 21560730.

It is an arithmetic number, because the mean of its divisors is an integer number (21560730).

Almost surely, 2^43121459 is an apocalyptic number.

43121459 is a deficient number, since it is larger than the sum of its proper divisors (1).

43121459 is an equidigital number, since it uses as much as digits as its factorization.

43121459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 43121459 is about 6566.6931556149. The cubic root of 43121459 is about 350.6693558124.

The spelling of 43121459 in words is "forty-three million, one hundred twenty-one thousand, four hundred fifty-nine".