42247307 has 4 divisors (see below), whose sum is σ = 43044480. Its totient is φ = 41450136.

The previous prime is 42247301. The next prime is 42247333. The reversal of 42247307 is 70374224.

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 42247307 - 2⁴ = 42247291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42247307.

It is not an unprimeable number, because it can be changed into a prime (42247301) 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, 398507 + ... + 398612.

It is an arithmetic number, because the mean of its divisors is an integer number (10761120).

Almost surely, 2^42247307 is an apocalyptic number.

42247307 is a deficient number, since it is larger than the sum of its proper divisors (797173).

42247307 is an equidigital number, since it uses as much as digits as its factorization.

42247307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797172.

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 42247307 is about 6499.7928428528. The cubic root of 42247307 is about 348.2835882556.

The spelling of 42247307 in words is "forty-two million, two hundred forty-seven thousand, three hundred seven".