42416217 has 10 divisors (see below), whose sum is σ = 63362618. Its totient is φ = 28277424.

The previous prime is 42416201. The next prime is 42416233. The reversal of 42416217 is 71261424.

It is an interprime number because it is at equal distance from previous prime (42416201) and next prime (42416233).

It can be written as a sum of positive squares in only one way, i.e., 34327881 + 8088336 = 5859^2 + 2844^2 .

It is not a de Polignac number, because 42416217 - 2⁴ = 42416201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42416317) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 261748 + ... + 261909.

Almost surely, 2^42416217 is an apocalyptic number.

It is an amenable number.

42416217 is a deficient number, since it is larger than the sum of its proper divisors (20946401).

42416217 is an equidigital number, since it uses as much as digits as its factorization.

42416217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523669 (or 523660 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 42416217 is about 6512.7733723814. The cubic root of 42416217 is about 348.7471314367.

It can be divided in two parts, 424 and 16217, that added together give a square (16641 = 129²).

The spelling of 42416217 in words is "forty-two million, four hundred sixteen thousand, two hundred seventeen".