427722321 has 16 divisors (see below), whose sum is σ = 618591680. Its totient is φ = 261316800.

The previous prime is 427722313. The next prime is 427722377. The reversal of 427722321 is 123227724.

It is not a de Polignac number, because 427722321 - 2³ = 427722313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (427722311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34030 + ... + 44871.

It is an arithmetic number, because the mean of its divisors is an integer number (38661980).

Almost surely, 2^427722321 is an apocalyptic number.

It is an amenable number.

427722321 is a deficient number, since it is larger than the sum of its proper divisors (190869359).

427722321 is a wasteful number, since it uses less digits than its factorization.

427722321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79056.

The product of its digits is 9408, while the sum is 30.

The square root of 427722321 is about 20681.4487161804. The cubic root of 427722321 is about 753.4491922249.

The spelling of 427722321 in words is "four hundred twenty-seven million, seven hundred twenty-two thousand, three hundred twenty-one".