421654922 has 8 divisors (see below), whose sum is σ = 681134916. Its totient is φ = 194609952.

The previous prime is 421654921. The next prime is 421654943. The reversal of 421654922 is 229456124.

It can be written as a sum of positive squares in 2 ways, for example, as 312264241 + 109390681 = 17671^2 + 10459^2 .

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

It is not an unprimeable number, because it can be changed into a prime (421654921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8108723 + ... + 8108774.

Almost surely, 2^421654922 is an apocalyptic number.

421654922 is a deficient number, since it is larger than the sum of its proper divisors (259479994).

421654922 is a wasteful number, since it uses less digits than its factorization.

421654922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16217512.

The product of its digits is 34560, while the sum is 35.

The square root of 421654922 is about 20534.2377993438. The cubic root of 421654922 is about 749.8695607228.

The spelling of 421654922 in words is "four hundred twenty-one million, six hundred fifty-four thousand, nine hundred twenty-two".