242022001 has 4 divisors (see below), whose sum is σ = 260639092. Its totient is φ = 223404912.

The previous prime is 242021999. The next prime is 242022007. The reversal of 242022001 is 100220242.

242022001 = 11000² + 11001².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100220242 = 2 ⋅50110121.

It can be written as a sum of positive squares in 2 ways, for example, as 121022001 + 121000000 = 11001^2 + 11000^2 .

It is a cyclic number.

It is not a de Polignac number, because 242022001 - 2¹ = 242021999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 18617077 = 242022001 / (2 + 4 + 2 + 0 + 2 + 2 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242022007) 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, 9308526 + ... + 9308551.

It is an arithmetic number, because the mean of its divisors is an integer number (65159773).

Almost surely, 2^242022001 is an apocalyptic number.

242022001 is the 11001-st centered square number.

It is an amenable number.

242022001 is a deficient number, since it is larger than the sum of its proper divisors (18617091).

242022001 is a wasteful number, since it uses less digits than its factorization.

242022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18617090.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 242022001 is about 15557.0563089551. The cubic root of 242022001 is about 623.1868526009.

Adding to 242022001 its reverse (100220242), we get a palindrome (342242243).

The spelling of 242022001 in words is "two hundred forty-two million, twenty-two thousand, one".