42331109 has 6 divisors (see below), whose sum is σ = 44252166. Its totient is φ = 40490120.

The previous prime is 42331103. The next prime is 42331111. The reversal of 42331109 is 90113324.

It can be written as a sum of positive squares in only one way, i.e., 24226084 + 18105025 = 4922^2 + 4255^2 .

It is not a de Polignac number, because 42331109 - 2⁸ = 42330853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 (42331103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39482 + ... + 40539.

It is an arithmetic number, because the mean of its divisors is an integer number (7375361).

Almost surely, 2^42331109 is an apocalyptic number.

It is an amenable number.

42331109 is a deficient number, since it is larger than the sum of its proper divisors (1921057).

42331109 is an equidigital number, since it uses as much as digits as its factorization.

42331109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80067 (or 80044 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 42331109 is about 6506.2361623292. The cubic root of 42331109 is about 348.5137219309.

The spelling of 42331109 in words is "forty-two million, three hundred thirty-one thousand, one hundred nine".