242662515021 has 12 divisors (see below), whose sum is σ = 351467601472. Its totient is φ = 161334203976.

The previous prime is 242662515019. The next prime is 242662515091. The reversal of 242662515021 is 120515266242.

242662515021 is a `hidden beast` number, since 2 + 4 + 2 + 6 + 625 + 1 + 5 + 0 + 21 = 666.

242662515021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 242662515021 - 2¹ = 242662515019 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 (242662515091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36730351 + ... + 36736956.

Almost surely, 2^242662515021 is an apocalyptic number.

It is an amenable number.

242662515021 is a deficient number, since it is larger than the sum of its proper divisors (108805086451).

242662515021 is a wasteful number, since it uses less digits than its factorization.

242662515021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73467680 (or 73467677 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 242662515021 in words is "two hundred forty-two billion, six hundred sixty-two million, five hundred fifteen thousand, twenty-one".