424001971 has 2 divisors, whose sum is σ = 424001972. Its totient is φ = 424001970.

The previous prime is 424001969. The next prime is 424002017. The reversal of 424001971 is 179100424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 424001971 - 2¹ = 424001969 is a prime.

Together with 424001969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (424001771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212000985 + 212000986.

It is an arithmetic number, because the mean of its divisors is an integer number (212000986).

Almost surely, 2^424001971 is an apocalyptic number.

424001971 is a deficient number, since it is larger than the sum of its proper divisors (1).

424001971 is an equidigital number, since it uses as much as digits as its factorization.

424001971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 424001971 is about 20591.3081420292. The cubic root of 424001971 is about 751.2583149366.

The spelling of 424001971 in words is "four hundred twenty-four million, one thousand, nine hundred seventy-one".