142224461 has 2 divisors, whose sum is σ = 142224462. Its totient is φ = 142224460.

The previous prime is 142224457. The next prime is 142224503. The reversal of 142224461 is 164422241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89661961 + 52562500 = 9469^2 + 7250^2 .

It is a cyclic number.

It is not a de Polignac number, because 142224461 - 2² = 142224457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142224461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142224421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71112230 + 71112231.

It is an arithmetic number, because the mean of its divisors is an integer number (71112231).

Almost surely, 2^142224461 is an apocalyptic number.

It is an amenable number.

142224461 is a deficient number, since it is larger than the sum of its proper divisors (1).

142224461 is an equidigital number, since it uses as much as digits as its factorization.

142224461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 26.

The square root of 142224461 is about 11925.7897432413. The cubic root of 142224461 is about 521.9850910536.

The spelling of 142224461 in words is "one hundred forty-two million, two hundred twenty-four thousand, four hundred sixty-one".