42215307 has 4 divisors (see below), whose sum is σ = 56287080. Its totient is φ = 28143536.

The previous prime is 42215297. The next prime is 42215311. The reversal of 42215307 is 70351224.

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 42215307 - 2⁴ = 42215291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42215357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7035882 + ... + 7035887.

It is an arithmetic number, because the mean of its divisors is an integer number (14071770).

Almost surely, 2^42215307 is an apocalyptic number.

42215307 is a deficient number, since it is larger than the sum of its proper divisors (14071773).

42215307 is a wasteful number, since it uses less digits than its factorization.

42215307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14071772.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 42215307 is about 6497.3307596274. The cubic root of 42215307 is about 348.1956308549.

The spelling of 42215307 in words is "forty-two million, two hundred fifteen thousand, three hundred seven".