42302909 has 8 divisors (see below), whose sum is σ = 47740320. Its totient is φ = 37130800.

The previous prime is 42302903. The next prime is 42302917. The reversal of 42302909 is 90920324.

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

It is a cyclic number.

It is not a de Polignac number, because 42302909 - 2⁴ = 42302893 is a prime.

It is a super-2 number, since 2×42302909² = 3579072219724562, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42302903) 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, 65987 + ... + 66624.

It is an arithmetic number, because the mean of its divisors is an integer number (5967540).

Almost surely, 2^42302909 is an apocalyptic number.

It is an amenable number.

42302909 is a deficient number, since it is larger than the sum of its proper divisors (5437411).

42302909 is a wasteful number, since it uses less digits than its factorization.

42302909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132651.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 42302909 is about 6504.0686496992. The cubic root of 42302909 is about 348.4363141614.

The spelling of 42302909 in words is "forty-two million, three hundred two thousand, nine hundred nine".