142246001 has 2 divisors, whose sum is σ = 142246002. Its totient is φ = 142246000.

The previous prime is 142245997. The next prime is 142246009. The reversal of 142246001 is 100642241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115455025 + 26790976 = 10745^2 + 5176^2 .

It is a cyclic number.

It is not a de Polignac number, because 142246001 - 2² = 142245997 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142246009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71123000 + 71123001.

It is an arithmetic number, because the mean of its divisors is an integer number (71123001).

Almost surely, 2^142246001 is an apocalyptic number.

It is an amenable number.

142246001 is a deficient number, since it is larger than the sum of its proper divisors (1).

142246001 is an equidigital number, since it uses as much as digits as its factorization.

142246001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 142246001 is about 11926.6927938972. The cubic root of 142246001 is about 522.0114413996.

Adding to 142246001 its reverse (100642241), we get a palindrome (242888242).

The spelling of 142246001 in words is "one hundred forty-two million, two hundred forty-six thousand, one".