421567424 has 14 divisors (see below), whose sum is σ = 836547984. Its totient is φ = 210783680.

The previous prime is 421567423. The next prime is 421567429. The reversal of 421567424 is 424765124.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421567423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3293432 + ... + 3293559.

Almost surely, 2^421567424 is an apocalyptic number.

It is an amenable number.

421567424 is a deficient number, since it is larger than the sum of its proper divisors (414980560).

421567424 is an equidigital number, since it uses as much as digits as its factorization.

421567424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6587003 (or 6586993 counting only the distinct ones).

The product of its digits is 53760, while the sum is 35.

The square root of 421567424 is about 20532.1071495353. The cubic root of 421567424 is about 749.8176884277.

The spelling of 421567424 in words is "four hundred twenty-one million, five hundred sixty-seven thousand, four hundred twenty-four".