43122881 has 2 divisors, whose sum is σ = 43122882. Its totient is φ = 43122880.

The previous prime is 43122841. The next prime is 43122883. The reversal of 43122881 is 18822134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43020481 + 102400 = 6559^2 + 320^2 .

It is a cyclic number.

It is not a de Polignac number, because 43122881 - 2⁶ = 43122817 is a prime.

It is a super-2 number, since 2×43122881² = 3719165731480322, which contains 22 as substring.

Together with 43122883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43122883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21561440 + 21561441.

It is an arithmetic number, because the mean of its divisors is an integer number (21561441).

Almost surely, 2^43122881 is an apocalyptic number.

It is an amenable number.

43122881 is a deficient number, since it is larger than the sum of its proper divisors (1).

43122881 is an equidigital number, since it uses as much as digits as its factorization.

43122881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 29.

The square root of 43122881 is about 6566.8014283972. The cubic root of 43122881 is about 350.6732104001.

The spelling of 43122881 in words is "forty-three million, one hundred twenty-two thousand, eight hundred eighty-one".