242511350143021 has 4 divisors (see below), whose sum is σ = 242511430582044. Its totient is φ = 242511269704000.

The previous prime is 242511350143009. The next prime is 242511350143057. The reversal of 242511350143021 is 120341053115242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 187659477640996 + 54851872502025 = 13698886^2 + 7406205^2 .

It is a cyclic number.

It is not a de Polignac number, because 242511350143021 - 2⁴¹ = 240312326887469 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 (242511350143001) 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 3 ways as a sum of consecutive naturals, for example, 35513710 + ... + 41788111.

It is an arithmetic number, because the mean of its divisors is an integer number (60627857645511).

Almost surely, 2^{242511350143021} is an apocalyptic number.

It is an amenable number.

242511350143021 is a deficient number, since it is larger than the sum of its proper divisors (80439023).

242511350143021 is an equidigital number, since it uses as much as digits as its factorization.

242511350143021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80439022.

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 242511350143021 in words is "two hundred forty-two trillion, five hundred eleven billion, three hundred fifty million, one hundred forty-three thousand, twenty-one".