142822261 has 2 divisors, whose sum is σ = 142822262. Its totient is φ = 142822260.

The previous prime is 142822231. The next prime is 142822291. The reversal of 142822261 is 162228241.

It is a balanced prime because it is at equal distance from previous prime (142822231) and next prime (142822291).

It can be written as a sum of positive squares in only one way, i.e., 141158161 + 1664100 = 11881^2 + 1290^2 .

It is a cyclic number.

It is not a de Polignac number, because 142822261 - 2⁷ = 142822133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142822231) 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, 71411130 + 71411131.

It is an arithmetic number, because the mean of its divisors is an integer number (71411131).

Almost surely, 2^142822261 is an apocalyptic number.

It is an amenable number.

142822261 is a deficient number, since it is larger than the sum of its proper divisors (1).

142822261 is an equidigital number, since it uses as much as digits as its factorization.

142822261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 28.

The square root of 142822261 is about 11950.8267914818. The cubic root of 142822261 is about 522.7154073182.

It can be divided in two parts, 142 and 822261, that added together give a triangular number (822403 = T₁₂₈₂).

The spelling of 142822261 in words is "one hundred forty-two million, eight hundred twenty-two thousand, two hundred sixty-one".