242151974819 has 4 divisors (see below), whose sum is σ = 247304144544. Its totient is φ = 236999805096.

The previous prime is 242151974803. The next prime is 242151974843. The reversal of 242151974819 is 918479151242.

242151974819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 242151974819 - 2⁴ = 242151974803 is a prime.

It is a super-2 number, since 2×242151974819² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242151074819) 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, 2576084792 + ... + 2576084885.

It is an arithmetic number, because the mean of its divisors is an integer number (61826036136).

Almost surely, 2^242151974819 is an apocalyptic number.

242151974819 is a deficient number, since it is larger than the sum of its proper divisors (5152169725).

242151974819 is an equidigital number, since it uses as much as digits as its factorization.

242151974819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5152169724.

The product of its digits is 1451520, while the sum is 53.

The spelling of 242151974819 in words is "two hundred forty-two billion, one hundred fifty-one million, nine hundred seventy-four thousand, eight hundred nineteen".