420527897 has 2 divisors, whose sum is σ = 420527898. Its totient is φ = 420527896.

The previous prime is 420527879. The next prime is 420527923. The reversal of 420527897 is 798725024.

Together with previous prime (420527879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373687561 + 46840336 = 19331^2 + 6844^2 .

It is a cyclic number.

It is not a de Polignac number, because 420527897 - 2⁸ = 420527641 is a prime.

It is not a weakly prime, because it can be changed into another prime (420527297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210263948 + 210263949.

It is an arithmetic number, because the mean of its divisors is an integer number (210263949).

Almost surely, 2^420527897 is an apocalyptic number.

It is an amenable number.

420527897 is a deficient number, since it is larger than the sum of its proper divisors (1).

420527897 is an equidigital number, since it uses as much as digits as its factorization.

420527897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 420527897 is about 20506.7768554690. The cubic root of 420527897 is about 749.2008655554.

The spelling of 420527897 in words is "four hundred twenty million, five hundred twenty-seven thousand, eight hundred ninety-seven".