421224067 has 4 divisors (see below), whose sum is σ = 459517176. Its totient is φ = 382930960.

The previous prime is 421224061. The next prime is 421224077. The reversal of 421224067 is 760422124.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421224067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421224061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19146538 + ... + 19146559.

It is an arithmetic number, because the mean of its divisors is an integer number (114879294).

Almost surely, 2^421224067 is an apocalyptic number.

421224067 is a deficient number, since it is larger than the sum of its proper divisors (38293109).

421224067 is a wasteful number, since it uses less digits than its factorization.

421224067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38293108.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 421224067 is about 20523.7439810576. The cubic root of 421224067 is about 749.6140633639.

The spelling of 421224067 in words is "four hundred twenty-one million, two hundred twenty-four thousand, sixty-seven".