142660061 has 2 divisors, whose sum is σ = 142660062. Its totient is φ = 142660060.

The previous prime is 142659991. The next prime is 142660069. The reversal of 142660061 is 160066241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132388036 + 10272025 = 11506^2 + 3205^2 .

It is a cyclic number.

It is not a de Polignac number, because 142660061 - 2²⁶ = 75551197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142660061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142660069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71330030 + 71330031.

It is an arithmetic number, because the mean of its divisors is an integer number (71330031).

Almost surely, 2^142660061 is an apocalyptic number.

It is an amenable number.

142660061 is a deficient number, since it is larger than the sum of its proper divisors (1).

142660061 is an equidigital number, since it uses as much as digits as its factorization.

142660061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 142660061 is about 11944.0387223083. The cubic root of 142660061 is about 522.5174536877.

The spelling of 142660061 in words is "one hundred forty-two million, six hundred sixty thousand, sixty-one".