142666141 has 4 divisors (see below), whose sum is σ = 143234784. Its totient is φ = 142097500.

The previous prime is 142666099. The next prime is 142666151. The reversal of 142666141 is 141666241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142666141 - 2²⁷ = 8448413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142666151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283945 + ... + 284446.

It is an arithmetic number, because the mean of its divisors is an integer number (35808696).

Almost surely, 2^142666141 is an apocalyptic number.

It is an amenable number.

142666141 is a deficient number, since it is larger than the sum of its proper divisors (568643).

142666141 is an equidigital number, since it uses as much as digits as its factorization.

142666141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568642.

The product of its digits is 6912, while the sum is 31.

The square root of 142666141 is about 11944.2932398698. The cubic root of 142666141 is about 522.5248766038.

The spelling of 142666141 in words is "one hundred forty-two million, six hundred sixty-six thousand, one hundred forty-one".