420936667 has 8 divisors (see below), whose sum is σ = 426373200. Its totient is φ = 415534080.

The previous prime is 420936647. The next prime is 420936671. The reversal of 420936667 is 766639024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420936667 - 2¹⁹ = 420412379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420936647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16959 + ... + 33607.

It is an arithmetic number, because the mean of its divisors is an integer number (53296650).

Almost surely, 2^420936667 is an apocalyptic number.

420936667 is a deficient number, since it is larger than the sum of its proper divisors (5436533).

420936667 is a wasteful number, since it uses less digits than its factorization.

420936667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16973.

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 420936667 is about 20516.7411398594. The cubic root of 420936667 is about 749.4435380504.

The spelling of 420936667 in words is "four hundred twenty million, nine hundred thirty-six thousand, six hundred sixty-seven".