242905485820 has 12 divisors (see below), whose sum is σ = 510101520264. Its totient is φ = 97162194320.

The previous prime is 242905485749. The next prime is 242905485821. The reversal of 242905485820 is 28584509242.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242905485821) 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, 6072637126 + ... + 6072637165.

It is an arithmetic number, because the mean of its divisors is an integer number (42508460022).

Almost surely, 2^242905485820 is an apocalyptic number.

242905485820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242905485820 is an abundant number, since it is smaller than the sum of its proper divisors (267196034444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242905485820 is a wasteful number, since it uses less digits than its factorization.

242905485820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12145274300 (or 12145274298 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 49.

The spelling of 242905485820 in words is "two hundred forty-two billion, nine hundred five million, four hundred eighty-five thousand, eight hundred twenty".