421223667 has 8 divisors (see below), whose sum is σ = 561746640. Its totient is φ = 280758240.

The previous prime is 421223639. The next prime is 421223669. The reversal of 421223667 is 766322124.

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

It is not a de Polignac number, because 421223667 - 2¹⁵ = 421190899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421223669) 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 7 ways as a sum of consecutive naturals, for example, 7417 + ... + 29957.

It is an arithmetic number, because the mean of its divisors is an integer number (70218330).

Almost surely, 2^421223667 is an apocalyptic number.

421223667 is a deficient number, since it is larger than the sum of its proper divisors (140522973).

421223667 is a wasteful number, since it uses less digits than its factorization.

421223667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28773.

The product of its digits is 24192, while the sum is 33.

The square root of 421223667 is about 20523.7342362446. The cubic root of 421223667 is about 749.6138260826.

The spelling of 421223667 in words is "four hundred twenty-one million, two hundred twenty-three thousand, six hundred sixty-seven".