42216901 has 8 divisors (see below), whose sum is σ = 42957504. Its totient is φ = 41479680.

The previous prime is 42216893. The next prime is 42216929. The reversal of 42216901 is 10961224.

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 42216901 - 2³ = 42216893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42216931) 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, 42456 + ... + 43438.

It is an arithmetic number, because the mean of its divisors is an integer number (5369688).

Almost surely, 2^42216901 is an apocalyptic number.

It is an amenable number.

42216901 is a deficient number, since it is larger than the sum of its proper divisors (740603).

42216901 is an equidigital number, since it uses as much as digits as its factorization.

42216901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 42216901 is about 6497.4534242271. The cubic root of 42216901 is about 348.2000132846.

The spelling of 42216901 in words is "forty-two million, two hundred sixteen thousand, nine hundred one".