142168141 has 4 divisors (see below), whose sum is σ = 142597984. Its totient is φ = 141738300.

The previous prime is 142168133. The next prime is 142168153. The reversal of 142168141 is 141861241.

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, and also an emirpimes, since its reverse is a distinct semiprime: 141861241 = 409 ⋅346849.

It is a cyclic number.

It is not a de Polignac number, because 142168141 - 2³ = 142168133 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 (142168181) 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, 214425 + ... + 215086.

It is an arithmetic number, because the mean of its divisors is an integer number (35649496).

Almost surely, 2^142168141 is an apocalyptic number.

It is an amenable number.

142168141 is a deficient number, since it is larger than the sum of its proper divisors (429843).

142168141 is an equidigital number, since it uses as much as digits as its factorization.

142168141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429842.

The product of its digits is 1536, while the sum is 28.

The square root of 142168141 is about 11923.4282402336. The cubic root of 142168141 is about 521.9161810094.

The spelling of 142168141 in words is "one hundred forty-two million, one hundred sixty-eight thousand, one hundred forty-one".