142118671 has 4 divisors (see below), whose sum is σ = 143715600. Its totient is φ = 140521744.

The previous prime is 142118621. The next prime is 142118681. The reversal of 142118671 is 176811241.

142118671 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: 176811241 = 137 ⋅1290593.

It is not a de Polignac number, because 142118671 - 2⁹ = 142118159 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 (142118611) 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, 798331 + ... + 798508.

It is an arithmetic number, because the mean of its divisors is an integer number (35928900).

Almost surely, 2^142118671 is an apocalyptic number.

142118671 is a deficient number, since it is larger than the sum of its proper divisors (1596929).

142118671 is an equidigital number, since it uses as much as digits as its factorization.

142118671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596928.

The product of its digits is 2688, while the sum is 31.

The square root of 142118671 is about 11921.3535724766. The cubic root of 142118671 is about 521.8556372321.

The spelling of 142118671 in words is "one hundred forty-two million, one hundred eighteen thousand, six hundred seventy-one".