42299009 has 8 divisors (see below), whose sum is σ = 44849448. Its totient is φ = 39755520.

The previous prime is 42298999. The next prime is 42299017. The reversal of 42299009 is 90099224.

It can be written as a sum of positive squares in 4 ways, for example, as 23980609 + 18318400 = 4897^2 + 4280^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-42299009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42299009.

It is not an unprimeable number, because it can be changed into a prime (42299039) 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 7 ways as a sum of consecutive naturals, for example, 16139 + ... + 18575.

It is an arithmetic number, because the mean of its divisors is an integer number (5606181).

Almost surely, 2^42299009 is an apocalyptic number.

It is an amenable number.

42299009 is a deficient number, since it is larger than the sum of its proper divisors (2550439).

42299009 is a wasteful number, since it uses less digits than its factorization.

42299009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3475.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 42299009 is about 6503.7688304552. The cubic root of 42299009 is about 348.4256061241.

The spelling of 42299009 in words is "forty-two million, two hundred ninety-nine thousand, nine".