40120342441 has 2 divisors, whose sum is σ = 40120342442. Its totient is φ = 40120342440.

The previous prime is 40120342387. The next prime is 40120342477. The reversal of 40120342441 is 14424302104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35206893225 + 4913449216 = 187635^2 + 70096^2 .

It is a cyclic number.

It is not a de Polignac number, because 40120342441 - 2⁹ = 40120341929 is a prime.

It is not a weakly prime, because it can be changed into another prime (40120342481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20060171220 + 20060171221.

It is an arithmetic number, because the mean of its divisors is an integer number (20060171221).

Almost surely, 2^40120342441 is an apocalyptic number.

It is an amenable number.

40120342441 is a deficient number, since it is larger than the sum of its proper divisors (1).

40120342441 is an equidigital number, since it uses as much as digits as its factorization.

40120342441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 40120342441 its reverse (14424302104), we get a palindrome (54544644545).

The spelling of 40120342441 in words is "forty billion, one hundred twenty million, three hundred forty-two thousand, four hundred forty-one".