142522561 has 2 divisors, whose sum is σ = 142522562. Its totient is φ = 142522560.

The previous prime is 142522517. The next prime is 142522573. The reversal of 142522561 is 165225241.

142522561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137921536 + 4601025 = 11744^2 + 2145^2 .

It is a cyclic number.

It is not a de Polignac number, because 142522561 - 2¹³ = 142514369 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142522361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71261280 + 71261281.

It is an arithmetic number, because the mean of its divisors is an integer number (71261281).

Almost surely, 2^142522561 is an apocalyptic number.

It is an amenable number.

142522561 is a deficient number, since it is larger than the sum of its proper divisors (1).

142522561 is an equidigital number, since it uses as much as digits as its factorization.

142522561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 28.

The square root of 142522561 is about 11938.2813252160. The cubic root of 142522561 is about 522.3495271164.

The spelling of 142522561 in words is "one hundred forty-two million, five hundred twenty-two thousand, five hundred sixty-one".