422754021 has 6 divisors (see below), whose sum is σ = 610644710. Its totient is φ = 281836008.

The previous prime is 422754001. The next prime is 422754061. The reversal of 422754021 is 120457224.

It can be written as a sum of positive squares in only one way, i.e., 314885025 + 107868996 = 17745^2 + 10386^2 .

It is not a de Polignac number, because 422754021 - 2⁷ = 422753893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422754001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23486326 + ... + 23486343.

Almost surely, 2^422754021 is an apocalyptic number.

It is an amenable number.

422754021 is a deficient number, since it is larger than the sum of its proper divisors (187890689).

422754021 is a wasteful number, since it uses less digits than its factorization.

422754021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46972675 (or 46972672 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 422754021 is about 20560.9829774746. The cubic root of 422754021 is about 750.5205399673.

The spelling of 422754021 in words is "four hundred twenty-two million, seven hundred fifty-four thousand, twenty-one".