43122901 has 2 divisors, whose sum is σ = 43122902. Its totient is φ = 43122900.

The previous prime is 43122887. The next prime is 43122917. The reversal of 43122901 is 10922134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33074001 + 10048900 = 5751^2 + 3170^2 .

It is a cyclic number.

It is not a de Polignac number, because 43122901 - 2¹⁹ = 42598613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43122301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21561450 + 21561451.

It is an arithmetic number, because the mean of its divisors is an integer number (21561451).

Almost surely, 2^43122901 is an apocalyptic number.

It is an amenable number.

43122901 is a deficient number, since it is larger than the sum of its proper divisors (1).

43122901 is an equidigital number, since it uses as much as digits as its factorization.

43122901 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 22.

The square root of 43122901 is about 6566.8029512084. The cubic root of 43122901 is about 350.6732646131.

It can be divided in two parts, 431 and 22901, that added together give a palindrome (23332).

The spelling of 43122901 in words is "forty-three million, one hundred twenty-two thousand, nine hundred one".