217244600242 has 8 divisors (see below), whose sum is σ = 330456575232. Its totient is φ = 107092408500.

The previous prime is 217244600207. The next prime is 217244600249. The reversal of 217244600242 is 242006442712.

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

It is a junction number, because it is equal to n+sod(n) for n = 217244600198 and 217244600207.

It is not an unprimeable number, because it can be changed into a prime (217244600249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764945634 + ... + 764945917.

It is an arithmetic number, because the mean of its divisors is an integer number (41307071904).

Almost surely, 2^217244600242 is an apocalyptic number.

217244600242 is a deficient number, since it is larger than the sum of its proper divisors (113211974990).

217244600242 is a wasteful number, since it uses less digits than its factorization.

217244600242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529891624.

The product of its (nonzero) digits is 43008, while the sum is 34.

The spelling of 217244600242 in words is "two hundred seventeen billion, two hundred forty-four million, six hundred thousand, two hundred forty-two".