42216527 has 4 divisors (see below), whose sum is σ = 42690960. Its totient is φ = 41742096.

The previous prime is 42216521. The next prime is 42216533. The reversal of 42216527 is 72561224.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (42216521) and next prime (42216533).

It is a cyclic number.

It is not a de Polignac number, because 42216527 - 2¹² = 42212431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42216527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42216521) 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, 237083 + ... + 237260.

It is an arithmetic number, because the mean of its divisors is an integer number (10672740).

Almost surely, 2^42216527 is an apocalyptic number.

42216527 is a deficient number, since it is larger than the sum of its proper divisors (474433).

42216527 is an equidigital number, since it uses as much as digits as its factorization.

42216527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474432.

The product of its digits is 6720, while the sum is 29.

The square root of 42216527 is about 6497.4246436569. The cubic root of 42216527 is about 348.1989850456.

The spelling of 42216527 in words is "forty-two million, two hundred sixteen thousand, five hundred twenty-seven".