242005501 has 2 divisors, whose sum is σ = 242005502. Its totient is φ = 242005500.

The previous prime is 242005487. The next prime is 242005571. The reversal of 242005501 is 105500242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148206276 + 93799225 = 12174^2 + 9685^2 .

It is a cyclic number.

It is not a de Polignac number, because 242005501 - 2¹⁷ = 241874429 is a prime.

It is a super-2 number, since 2×242005501² = 117133325028522002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242005571) 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 as a sum of consecutive naturals, namely, 121002750 + 121002751.

It is an arithmetic number, because the mean of its divisors is an integer number (121002751).

Almost surely, 2^242005501 is an apocalyptic number.

It is an amenable number.

242005501 is a deficient number, since it is larger than the sum of its proper divisors (1).

242005501 is an equidigital number, since it uses as much as digits as its factorization.

242005501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 242005501 is about 15556.5259939358. The cubic root of 242005501 is about 623.1726902290.

Adding to 242005501 its reverse (105500242), we get a palindrome (347505743).

The spelling of 242005501 in words is "two hundred forty-two million, five thousand, five hundred one".