42242847 has 4 divisors (see below), whose sum is σ = 56323800. Its totient is φ = 28161896.

The previous prime is 42242831. The next prime is 42242869. The reversal of 42242847 is 74824224.

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 42242847 - 2⁴ = 42242831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42242887) 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, 7040472 + ... + 7040477.

It is an arithmetic number, because the mean of its divisors is an integer number (14080950).

Almost surely, 2^42242847 is an apocalyptic number.

42242847 is a deficient number, since it is larger than the sum of its proper divisors (14080953).

42242847 is a wasteful number, since it uses less digits than its factorization.

42242847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14080952.

The product of its digits is 28672, while the sum is 33.

The square root of 42242847 is about 6499.4497459400. The cubic root of 42242847 is about 348.2713318573.

The spelling of 42242847 in words is "forty-two million, two hundred forty-two thousand, eight hundred forty-seven".