420982571 has 2 divisors, whose sum is σ = 420982572. Its totient is φ = 420982570.

The previous prime is 420982553. The next prime is 420982603. The reversal of 420982571 is 175289024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420982571 - 2¹⁴ = 420966187 is a prime.

It is not a weakly prime, because it can be changed into another prime (420982171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210491285 + 210491286.

It is an arithmetic number, because the mean of its divisors is an integer number (210491286).

Almost surely, 2^420982571 is an apocalyptic number.

420982571 is a deficient number, since it is larger than the sum of its proper divisors (1).

420982571 is an equidigital number, since it uses as much as digits as its factorization.

420982571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 420982571 is about 20517.8598055450. The cubic root of 420982571 is about 749.4707798411.

The spelling of 420982571 in words is "four hundred twenty million, nine hundred eighty-two thousand, five hundred seventy-one".