424205081 has 2 divisors, whose sum is σ = 424205082. Its totient is φ = 424205080.

The previous prime is 424205017. The next prime is 424205083. The reversal of 424205081 is 180502424.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388444681 + 35760400 = 19709^2 + 5980^2 .

It is a cyclic number.

It is not a de Polignac number, because 424205081 - 2⁶ = 424205017 is a prime.

It is a super-2 number, since 2×424205081² = 359899901492433122, which contains 22 as substring.

Together with 424205083, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 424205081.

It is not a weakly prime, because it can be changed into another prime (424205083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212102540 + 212102541.

It is an arithmetic number, because the mean of its divisors is an integer number (212102541).

Almost surely, 2^424205081 is an apocalyptic number.

It is an amenable number.

424205081 is a deficient number, since it is larger than the sum of its proper divisors (1).

424205081 is an equidigital number, since it uses as much as digits as its factorization.

424205081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 424205081 is about 20596.2394868578. The cubic root of 424205081 is about 751.3782544090.

The spelling of 424205081 in words is "four hundred twenty-four million, two hundred five thousand, eighty-one".