42449305 has 4 divisors (see below), whose sum is σ = 50939172. Its totient is φ = 33959440.

The previous prime is 42449293. The next prime is 42449311. The reversal of 42449305 is 50394424.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23299929 + 19149376 = 4827^2 + 4376^2 .

It is not a de Polignac number, because 42449305 - 2¹¹ = 42447257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4244926 + ... + 4244935.

It is an arithmetic number, because the mean of its divisors is an integer number (12734793).

Almost surely, 2^42449305 is an apocalyptic number.

It is an amenable number.

42449305 is a deficient number, since it is larger than the sum of its proper divisors (8489867).

42449305 is an equidigital number, since it uses as much as digits as its factorization.

42449305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8489866.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 42449305 is about 6515.3131160367. The cubic root of 42449305 is about 348.8377913043.

It can be divided in two parts, 424 and 49305, that added together give a square (49729 = 223²).

The spelling of 42449305 in words is "forty-two million, four hundred forty-nine thousand, three hundred five".