421197707 has 4 divisors (see below), whose sum is σ = 481368816. Its totient is φ = 361026600.

The previous prime is 421197683. The next prime is 421197811. The reversal of 421197707 is 707791124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421197707 - 2²⁰ = 420149131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421191707) 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 in 3 ways as a sum of consecutive naturals, for example, 30085544 + ... + 30085557.

It is an arithmetic number, because the mean of its divisors is an integer number (120342204).

Almost surely, 2^421197707 is an apocalyptic number.

421197707 is a deficient number, since it is larger than the sum of its proper divisors (60171109).

421197707 is an equidigital number, since it uses as much as digits as its factorization.

421197707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60171108.

The product of its (nonzero) digits is 24696, while the sum is 38.

The square root of 421197707 is about 20523.1017879852. The cubic root of 421197707 is about 749.5984262082.

The spelling of 421197707 in words is "four hundred twenty-one million, one hundred ninety-seven thousand, seven hundred seven".