422501091 has 4 divisors (see below), whose sum is σ = 563334792. Its totient is φ = 281667392.

The previous prime is 422501089. The next prime is 422501137. The reversal of 422501091 is 190105224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 422501091 - 2¹ = 422501089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (422505091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70416846 + ... + 70416851.

It is an arithmetic number, because the mean of its divisors is an integer number (140833698).

Almost surely, 2^422501091 is an apocalyptic number.

422501091 is a deficient number, since it is larger than the sum of its proper divisors (140833701).

422501091 is a wasteful number, since it uses less digits than its factorization.

422501091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140833700.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 422501091 is about 20554.8313298845. The cubic root of 422501091 is about 750.3708335020.

The spelling of 422501091 in words is "four hundred twenty-two million, five hundred one thousand, ninety-one".