142441261 has 2 divisors, whose sum is σ = 142441262. Its totient is φ = 142441260.

The previous prime is 142441259. The next prime is 142441279. The reversal of 142441261 is 162144241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141015625 + 1425636 = 11875^2 + 1194^2 .

It is a cyclic number.

It is not a de Polignac number, because 142441261 - 2¹ = 142441259 is a prime.

Together with 142441259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142441361) 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 as a sum of consecutive naturals, namely, 71220630 + 71220631.

It is an arithmetic number, because the mean of its divisors is an integer number (71220631).

Almost surely, 2^142441261 is an apocalyptic number.

It is an amenable number.

142441261 is a deficient number, since it is larger than the sum of its proper divisors (1).

142441261 is an equidigital number, since it uses as much as digits as its factorization.

142441261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 25.

The square root of 142441261 is about 11934.8758267525. The cubic root of 142441261 is about 522.2501858993.

The spelling of 142441261 in words is "one hundred forty-two million, four hundred forty-one thousand, two hundred sixty-one".