420527971 has 2 divisors, whose sum is σ = 420527972. Its totient is φ = 420527970.

The previous prime is 420527951. The next prime is 420527983. The reversal of 420527971 is 179725024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420527971 - 2⁷ = 420527843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420527971.

It is not a weakly prime, because it can be changed into another prime (420527951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210263985 + 210263986.

It is an arithmetic number, because the mean of its divisors is an integer number (210263986).

Almost surely, 2^420527971 is an apocalyptic number.

420527971 is a deficient number, since it is larger than the sum of its proper divisors (1).

420527971 is an equidigital number, since it uses as much as digits as its factorization.

420527971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 420527971 is about 20506.7786597505. The cubic root of 420527971 is about 749.2009095008.

The spelling of 420527971 in words is "four hundred twenty million, five hundred twenty-seven thousand, nine hundred seventy-one".