42245305 has 8 divisors (see below), whose sum is σ = 52064712. Its totient is φ = 32882688.

The previous prime is 42245279. The next prime is 42245311. The reversal of 42245305 is 50354224.

It can be written as a sum of positive squares in 4 ways, for example, as 21706281 + 20539024 = 4659^2 + 4532^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42245305 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 42245305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113992 + ... + 114361.

It is an arithmetic number, because the mean of its divisors is an integer number (6508089).

Almost surely, 2^42245305 is an apocalyptic number.

It is an amenable number.

42245305 is a deficient number, since it is larger than the sum of its proper divisors (9819407).

42245305 is a wasteful number, since it uses less digits than its factorization.

42245305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228395.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 42245305 is about 6499.6388361201. The cubic root of 42245305 is about 348.2780867234.

Adding to 42245305 its reverse (50354224), we get a palindrome (92599529).

The spelling of 42245305 in words is "forty-two million, two hundred forty-five thousand, three hundred five".