421007701 has 2 divisors, whose sum is σ = 421007702. Its totient is φ = 421007700.

The previous prime is 421007689. The next prime is 421007731. The reversal of 421007701 is 107700124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 354568900 + 66438801 = 18830^2 + 8151^2 .

It is a cyclic number.

It is not a de Polignac number, because 421007701 - 2⁹ = 421007189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421007731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210503850 + 210503851.

It is an arithmetic number, because the mean of its divisors is an integer number (210503851).

Almost surely, 2^421007701 is an apocalyptic number.

It is an amenable number.

421007701 is a deficient number, since it is larger than the sum of its proper divisors (1).

421007701 is an equidigital number, since it uses as much as digits as its factorization.

421007701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 421007701 is about 20518.4721897124. The cubic root of 421007701 is about 749.4856924346.

Adding to 421007701 its reverse (107700124), we get a palindrome (528707825).

The spelling of 421007701 in words is "four hundred twenty-one million, seven thousand, seven hundred one".