242021173624 has 16 divisors (see below), whose sum is σ = 453844426320. Its totient is φ = 120995993280.

The previous prime is 242021173621. The next prime is 242021173657. The reversal of 242021173624 is 426371120242.

It is a self number, because there is not a number n which added to its sum of digits gives 242021173624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242021173621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1753549 + ... + 1886524.

It is an arithmetic number, because the mean of its divisors is an integer number (28365276645).

Almost surely, 2^242021173624 is an apocalyptic number.

It is an amenable number.

242021173624 is a deficient number, since it is larger than the sum of its proper divisors (211823252696).

242021173624 is a wasteful number, since it uses less digits than its factorization.

242021173624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3648390 (or 3648386 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

Adding to 242021173624 its reverse (426371120242), we get a palindrome (668392293866).

The spelling of 242021173624 in words is "two hundred forty-two billion, twenty-one million, one hundred seventy-three thousand, six hundred twenty-four".