42197217 has 8 divisors (see below), whose sum is σ = 57055680. Its totient is φ = 27735120.

The previous prime is 42197191. The next prime is 42197227. The reversal of 42197217 is 71279124.

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

It is not a de Polignac number, because 42197217 - 2⁶ = 42197153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42197227) 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 7 ways as a sum of consecutive naturals, for example, 98842 + ... + 99267.

It is an arithmetic number, because the mean of its divisors is an integer number (7131960).

Almost surely, 2^42197217 is an apocalyptic number.

It is an amenable number.

42197217 is a deficient number, since it is larger than the sum of its proper divisors (14858463).

42197217 is a wasteful number, since it uses less digits than its factorization.

42197217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198183.

The product of its digits is 7056, while the sum is 33.

The square root of 42197217 is about 6495.9385003246. The cubic root of 42197217 is about 348.1458877692.

The spelling of 42197217 in words is "forty-two million, one hundred ninety-seven thousand, two hundred seventeen".