242741076521 has 8 divisors (see below), whose sum is σ = 251126350920. Its totient is φ = 234356795008.

The previous prime is 242741076511. The next prime is 242741076547. The reversal of 242741076521 is 125670147242.

It can be written as a sum of positive squares in 4 ways, for example, as 146410000 + 242594666521 = 12100^2 + 492539^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 242741076521 - 2³⁰ = 241667334697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242741076511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267365 + ... + 746301.

It is an arithmetic number, because the mean of its divisors is an integer number (31390793865).

Almost surely, 2^242741076521 is an apocalyptic number.

It is an amenable number.

242741076521 is a deficient number, since it is larger than the sum of its proper divisors (8385274399).

242741076521 is a wasteful number, since it uses less digits than its factorization.

242741076521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496443.

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 242741076521 in words is "two hundred forty-two billion, seven hundred forty-one million, seventy-six thousand, five hundred twenty-one".