422720529 has 16 divisors (see below), whose sum is σ = 702704640. Its totient is φ = 219594960.

The previous prime is 422720477. The next prime is 422720561. The reversal of 422720529 is 925027224.

It is not a de Polignac number, because 422720529 - 2¹⁵ = 422687761 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 422720529.

It is not an unprimeable number, because it can be changed into a prime (422720329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 914749 + ... + 915210.

It is an arithmetic number, because the mean of its divisors is an integer number (43919040).

Almost surely, 2^422720529 is an apocalyptic number.

It is an amenable number.

422720529 is a deficient number, since it is larger than the sum of its proper divisors (279984111).

422720529 is a wasteful number, since it uses less digits than its factorization.

422720529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829980.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 422720529 is about 20560.1685061188. The cubic root of 422720529 is about 750.5007198540.

The spelling of 422720529 in words is "four hundred twenty-two million, seven hundred twenty thousand, five hundred twenty-nine".