42805327 has 4 divisors (see below), whose sum is σ = 44186176. Its totient is φ = 41424480.

The previous prime is 42805319. The next prime is 42805331. The reversal of 42805327 is 72350824.

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

It is a cyclic number.

It is not a de Polignac number, because 42805327 - 2³ = 42805319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 1380817 = 42805327 / (4 + 2 + 8 + 0 + 5 + 3 + 2 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42805387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690378 + ... + 690439.

It is an arithmetic number, because the mean of its divisors is an integer number (11046544).

Almost surely, 2^42805327 is an apocalyptic number.

42805327 is a deficient number, since it is larger than the sum of its proper divisors (1380849).

42805327 is a wasteful number, since it uses less digits than its factorization.

42805327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380848.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 42805327 is about 6542.5780087057. The cubic root of 42805327 is about 349.8103108183.

The spelling of 42805327 in words is "forty-two million, eight hundred five thousand, three hundred twenty-seven".