42215417 has 4 divisors (see below), whose sum is σ = 42401616. Its totient is φ = 42029220.

The previous prime is 42215413. The next prime is 42215423. The reversal of 42215417 is 71451224.

42215417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42215417 - 2² = 42215413 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42215413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92759 + ... + 93212.

It is an arithmetic number, because the mean of its divisors is an integer number (10600404).

Almost surely, 2^42215417 is an apocalyptic number.

It is an amenable number.

42215417 is a deficient number, since it is larger than the sum of its proper divisors (186199).

42215417 is a wasteful number, since it uses less digits than its factorization.

42215417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186198.

The product of its digits is 2240, while the sum is 26.

The square root of 42215417 is about 6497.3392246365. The cubic root of 42215417 is about 348.1959332845.

The spelling of 42215417 in words is "forty-two million, two hundred fifteen thousand, four hundred seventeen".