423078509 has 8 divisors (see below), whose sum is σ = 483667008. Its totient is φ = 362527200.

The previous prime is 423078503. The next prime is 423078511. The reversal of 423078509 is 905870324.

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

It is not a de Polignac number, because 423078509 - 2²⁴ = 406301293 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 (423078503) 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 7 ways as a sum of consecutive naturals, for example, 22214 + ... + 36600.

It is an arithmetic number, because the mean of its divisors is an integer number (60458376).

Almost surely, 2^423078509 is an apocalyptic number.

It is an amenable number.

423078509 is a deficient number, since it is larger than the sum of its proper divisors (60588499).

423078509 is a wasteful number, since it uses less digits than its factorization.

423078509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18595.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 423078509 is about 20568.8723317541. The cubic root of 423078509 is about 750.7125134037.

The spelling of 423078509 in words is "four hundred twenty-three million, seventy-eight thousand, five hundred nine".