422506509 has 8 divisors (see below), whose sum is σ = 563559360. Its totient is φ = 281562336.

The previous prime is 422506507. The next prime is 422506541. The reversal of 422506509 is 905605224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 422506509 - 2¹ = 422506507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 422506509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422506507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17617 + ... + 33990.

It is an arithmetic number, because the mean of its divisors is an integer number (70444920).

Almost surely, 2^422506509 is an apocalyptic number.

It is an amenable number.

422506509 is a deficient number, since it is larger than the sum of its proper divisors (141052851).

422506509 is a wasteful number, since it uses less digits than its factorization.

422506509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54339.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 422506509 is about 20554.9631232946. The cubic root of 422506509 is about 750.3740409823.

The spelling of 422506509 in words is "four hundred twenty-two million, five hundred six thousand, five hundred nine".