42437217 has 4 divisors (see below), whose sum is σ = 56582960. Its totient is φ = 28291476.

The previous prime is 42437207. The next prime is 42437249. The reversal of 42437217 is 71273424.

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 not a de Polignac number, because 42437217 - 2⁴ = 42437201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42437207) 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, 7072867 + ... + 7072872.

It is an arithmetic number, because the mean of its divisors is an integer number (14145740).

Almost surely, 2^42437217 is an apocalyptic number.

It is an amenable number.

42437217 is a deficient number, since it is larger than the sum of its proper divisors (14145743).

42437217 is a wasteful number, since it uses less digits than its factorization.

42437217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14145742.

The product of its digits is 9408, while the sum is 30.

The square root of 42437217 is about 6514.3853892750. The cubic root of 42437217 is about 348.8046761053.

The spelling of 42437217 in words is "forty-two million, four hundred thirty-seven thousand, two hundred seventeen".