422754721 has 9 divisors (see below), whose sum is σ = 438453561. Its totient is φ = 407601264.

The previous prime is 422754701. The next prime is 422754749. The reversal of 422754721 is 127457224.

The square root of 422754721 is 20561.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 60233121 + 362521600 = 7761^2 + 19040^2 .

It is not a de Polignac number, because 422754721 - 2⁷ = 422754593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422754701) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 595915 + ... + 596623.

Almost surely, 2^422754721 is an apocalyptic number.

422754721 is the 20561-st square number.

422754721 is the 10281-st centered octagonal number.

It is an amenable number.

422754721 is a deficient number, since it is larger than the sum of its proper divisors (15698840).

422754721 is an frugal number, since it uses more digits than its factorization.

422754721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476 (or 738 counting only the distinct ones).

The product of its digits is 31360, while the sum is 34.

The cubic root of 422754721 is about 750.5209542067.

The spelling of 422754721 in words is "four hundred twenty-two million, seven hundred fifty-four thousand, seven hundred twenty-one".