142580261 has 2 divisors, whose sum is σ = 142580262. Its totient is φ = 142580260.

The previous prime is 142580239. The next prime is 142580267. The reversal of 142580261 is 162085241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141467236 + 1113025 = 11894^2 + 1055^2 .

It is a cyclic number.

It is not a de Polignac number, because 142580261 - 2¹⁰ = 142579237 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142580267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71290130 + 71290131.

It is an arithmetic number, because the mean of its divisors is an integer number (71290131).

Almost surely, 2^142580261 is an apocalyptic number.

It is an amenable number.

142580261 is a deficient number, since it is larger than the sum of its proper divisors (1).

142580261 is an equidigital number, since it uses as much as digits as its factorization.

142580261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 142580261 is about 11940.6976764342. The cubic root of 142580261 is about 522.4200083583.

The spelling of 142580261 in words is "one hundred forty-two million, five hundred eighty thousand, two hundred sixty-one".