242193005 has 4 divisors (see below), whose sum is σ = 290631612. Its totient is φ = 193754400.

The previous prime is 242193001. The next prime is 242193037. The reversal of 242193005 is 500391242.

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 89151364 + 153041641 = 9442^2 + 12371^2 .

It is not a de Polignac number, because 242193005 - 2² = 242193001 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 (242193001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24219296 + ... + 24219305.

It is an arithmetic number, because the mean of its divisors is an integer number (72657903).

Almost surely, 2^242193005 is an apocalyptic number.

It is an amenable number.

242193005 is a deficient number, since it is larger than the sum of its proper divisors (48438607).

242193005 is an equidigital number, since it uses as much as digits as its factorization.

242193005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48438606.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 242193005 is about 15562.5513653771. The cubic root of 242193005 is about 623.3335918161. Note that the first 3 decimals are identical.

The spelling of 242193005 in words is "two hundred forty-two million, one hundred ninety-three thousand, five".