42242817 has 8 divisors (see below), whose sum is σ = 56661696. Its totient is φ = 27992912.

The previous prime is 42242803. The next prime is 42242831. The reversal of 42242817 is 71824224.

It is an interprime number because it is at equal distance from previous prime (42242803) and next prime (42242831).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42242817 - 2¹¹ = 42240769 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 41658 + ... + 42659.

It is an arithmetic number, because the mean of its divisors is an integer number (7082712).

Almost surely, 2^42242817 is an apocalyptic number.

It is an amenable number.

42242817 is a deficient number, since it is larger than the sum of its proper divisors (14418879).

42242817 is a wasteful number, since it uses less digits than its factorization.

42242817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84487.

The product of its digits is 7168, while the sum is 30.

The square root of 42242817 is about 6499.4474380519. The cubic root of 42242817 is about 348.2712494122.

The spelling of 42242817 in words is "forty-two million, two hundred forty-two thousand, eight hundred seventeen".