42380305 has 8 divisors (see below), whose sum is σ = 55479744. Its totient is φ = 30822000.

The previous prime is 42380297. The next prime is 42380321. The reversal of 42380305 is 50308324.

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

It is not a de Polignac number, because 42380305 - 2³ = 42380297 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 42380305.

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, 385221 + ... + 385330.

It is an arithmetic number, because the mean of its divisors is an integer number (6934968).

Almost surely, 2^42380305 is an apocalyptic number.

It is an amenable number.

42380305 is a deficient number, since it is larger than the sum of its proper divisors (13099439).

42380305 is a wasteful number, since it uses less digits than its factorization.

42380305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770567.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 42380305 is about 6510.0157449886. The cubic root of 42380305 is about 348.6486805445.

Adding to 42380305 its reverse (50308324), we get a palindrome (92688629).

The spelling of 42380305 in words is "forty-two million, three hundred eighty thousand, three hundred five".