43142220449 has 2 divisors, whose sum is σ = 43142220450. Its totient is φ = 43142220448.

The previous prime is 43142220413. The next prime is 43142220497. The reversal of 43142220449 is 94402224134.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34491918400 + 8650302049 = 185720^2 + 93007^2 .

It is a cyclic number.

It is not a de Polignac number, because 43142220449 - 2¹² = 43142216353 is a prime.

It is a super-2 number, since 2×43142220449² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43142220749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21571110224 + 21571110225.

It is an arithmetic number, because the mean of its divisors is an integer number (21571110225).

Almost surely, 2^43142220449 is an apocalyptic number.

It is an amenable number.

43142220449 is a deficient number, since it is larger than the sum of its proper divisors (1).

43142220449 is an equidigital number, since it uses as much as digits as its factorization.

43142220449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 43142220449 in words is "forty-three billion, one hundred forty-two million, two hundred twenty thousand, four hundred forty-nine".