42502209 has 8 divisors (see below), whose sum is σ = 58497792. Its totient is φ = 27420720.

The previous prime is 42502157. The next prime is 42502223. The reversal of 42502209 is 90220524.

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

It is not a de Polignac number, because 42502209 - 2¹³ = 42494017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42502309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228414 + ... + 228599.

It is an arithmetic number, because the mean of its divisors is an integer number (7312224).

Almost surely, 2^42502209 is an apocalyptic number.

It is an amenable number.

42502209 is a deficient number, since it is larger than the sum of its proper divisors (15995583).

42502209 is a wasteful number, since it uses less digits than its factorization.

42502209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457047.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 42502209 is about 6519.3718255672. The cubic root of 42502209 is about 348.9826484314.

The spelling of 42502209 in words is "forty-two million, five hundred two thousand, two hundred nine".