142666099 has 2 divisors, whose sum is σ = 142666100. Its totient is φ = 142666098.

The previous prime is 142666093. The next prime is 142666151. The reversal of 142666099 is 990666241.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142666099 - 2¹⁵ = 142633331 is a prime.

It is not a weakly prime, because it can be changed into another prime (142666093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71333049 + 71333050.

It is an arithmetic number, because the mean of its divisors is an integer number (71333050).

Almost surely, 2^142666099 is an apocalyptic number.

142666099 is a deficient number, since it is larger than the sum of its proper divisors (1).

142666099 is an equidigital number, since it uses as much as digits as its factorization.

142666099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 142666099 is about 11944.2914817079. The cubic root of 142666099 is about 522.5248253278.

The spelling of 142666099 in words is "one hundred forty-two million, six hundred sixty-six thousand, ninety-nine".