421916067 has 16 divisors (see below), whose sum is σ = 628560000. Its totient is φ = 279702792.

The previous prime is 421916063. The next prime is 421916171. The reversal of 421916067 is 760619124.

421916067 is a `hidden beast` number, since 42 + 1 + 9 + 1 + 606 + 7 = 666.

It is not a de Polignac number, because 421916067 - 2² = 421916063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421916063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38817 + ... + 48482.

It is an arithmetic number, because the mean of its divisors is an integer number (39285000).

Almost surely, 2^421916067 is an apocalyptic number.

421916067 is a deficient number, since it is larger than the sum of its proper divisors (206643933).

421916067 is a wasteful number, since it uses less digits than its factorization.

421916067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87487 (or 87481 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 421916067 is about 20540.5955853281. The cubic root of 421916067 is about 750.0243352104.

The spelling of 421916067 in words is "four hundred twenty-one million, nine hundred sixteen thousand, sixty-seven".