142666655 has 4 divisors (see below), whose sum is σ = 171199992. Its totient is φ = 114133320.

The previous prime is 142666637. The next prime is 142666691. The reversal of 142666655 is 556666241.

142666655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 556666241 = 17 ⋅32745073.

It is not a de Polignac number, because 142666655 - 2²⁰ = 141618079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14266661 + ... + 14266670.

It is an arithmetic number, because the mean of its divisors is an integer number (42799998).

Almost surely, 2^142666655 is an apocalyptic number.

142666655 is a deficient number, since it is larger than the sum of its proper divisors (28533337).

142666655 is an equidigital number, since it uses as much as digits as its factorization.

142666655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28533336.

The product of its digits is 259200, while the sum is 41.

The square root of 142666655 is about 11944.3147564019. The cubic root of 142666655 is about 522.5255041235.

The spelling of 142666655 in words is "one hundred forty-two million, six hundred sixty-six thousand, six hundred fifty-five".