142134623 has 4 divisors (see below), whose sum is σ = 143172240. Its totient is φ = 141097008.

The previous prime is 142134617. The next prime is 142134631. The reversal of 142134623 is 326431241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142134623 - 2⁸ = 142134367 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142134592 and 142134601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142134613) 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, 518603 + ... + 518876.

It is an arithmetic number, because the mean of its divisors is an integer number (35793060).

Almost surely, 2^142134623 is an apocalyptic number.

142134623 is a deficient number, since it is larger than the sum of its proper divisors (1037617).

142134623 is a wasteful number, since it uses less digits than its factorization.

142134623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037616.

The product of its digits is 3456, while the sum is 26.

The square root of 142134623 is about 11922.0226052461. The cubic root of 142134623 is about 521.8751615953.

Adding to 142134623 its reverse (326431241), we get a palindrome (468565864).

The spelling of 142134623 in words is "one hundred forty-two million, one hundred thirty-four thousand, six hundred twenty-three".