42447307 has 4 divisors (see below), whose sum is σ = 48511216. Its totient is φ = 36383400.

The previous prime is 42447281. The next prime is 42447323. The reversal of 42447307 is 70374424.

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 42447307 - 2⁷ = 42447179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42447347) 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, 3031944 + ... + 3031957.

It is an arithmetic number, because the mean of its divisors is an integer number (12127804).

Almost surely, 2^42447307 is an apocalyptic number.

42447307 is a deficient number, since it is larger than the sum of its proper divisors (6063909).

42447307 is an equidigital number, since it uses as much as digits as its factorization.

42447307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6063908.

The product of its (nonzero) digits is 18816, while the sum is 31.

The square root of 42447307 is about 6515.1597831519. The cubic root of 42447307 is about 348.8323181967.

The spelling of 42447307 in words is "forty-two million, four hundred forty-seven thousand, three hundred seven".