142140134 has 4 divisors (see below), whose sum is σ = 213210204. Its totient is φ = 71070066.

The previous prime is 142140133. The next prime is 142140139. The reversal of 142140134 is 431041241.

142140134 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: 431041241 = 41 ⋅10513201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142140133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35535032 + ... + 35535035.

It is an arithmetic number, because the mean of its divisors is an integer number (53302551).

Almost surely, 2^142140134 is an apocalyptic number.

142140134 is a deficient number, since it is larger than the sum of its proper divisors (71070070).

142140134 is an equidigital number, since it uses as much as digits as its factorization.

142140134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71070069.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 142140134 is about 11922.2537298952. The cubic root of 142140134 is about 521.8819064142.

Adding to 142140134 its reverse (431041241), we get a palindrome (573181375).

The spelling of 142140134 in words is "one hundred forty-two million, one hundred forty thousand, one hundred thirty-four".