421227406 has 8 divisors (see below), whose sum is σ = 632042424. Its totient is φ = 210546600.

The previous prime is 421227361. The next prime is 421227431. The reversal of 421227406 is 604722124.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25300 + ... + 38503.

It is an arithmetic number, because the mean of its divisors is an integer number (79005303).

Almost surely, 2^421227406 is an apocalyptic number.

421227406 is a deficient number, since it is larger than the sum of its proper divisors (210815018).

421227406 is a wasteful number, since it uses less digits than its factorization.

421227406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67106.

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

The square root of 421227406 is about 20523.8253257038. The cubic root of 421227406 is about 749.6160440633.

The spelling of 421227406 in words is "four hundred twenty-one million, two hundred twenty-seven thousand, four hundred six".