42441309 has 12 divisors (see below), whose sum is σ = 61717500. Its totient is φ = 28103424.

The previous prime is 42441277. The next prime is 42441313. The reversal of 42441309 is 90314424.

It can be written as a sum of positive squares in 2 ways, for example, as 20958084 + 21483225 = 4578^2 + 4635^2 .

It is not a de Polignac number, because 42441309 - 2⁵ = 42441277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42441319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14484 + ... + 17165.

It is an arithmetic number, because the mean of its divisors is an integer number (5143125).

Almost surely, 2^42441309 is an apocalyptic number.

It is an amenable number.

42441309 is a deficient number, since it is larger than the sum of its proper divisors (19276191).

42441309 is a wasteful number, since it uses less digits than its factorization.

42441309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31804 (or 31801 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 42441309 is about 6514.6994558460. The cubic root of 42441309 is about 348.8158868849.

The spelling of 42441309 in words is "forty-two million, four hundred forty-one thousand, three hundred nine".