142501423 has 4 divisors (see below), whose sum is σ = 143833320. Its totient is φ = 141169528.

The previous prime is 142501421. The next prime is 142501453. The reversal of 142501423 is 324105241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324105241 = 509 ⋅636749.

It is a cyclic number.

It is not a de Polignac number, because 142501423 - 2¹ = 142501421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142501394 and 142501403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142501421) 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, 665788 + ... + 666001.

It is an arithmetic number, because the mean of its divisors is an integer number (35958330).

Almost surely, 2^142501423 is an apocalyptic number.

142501423 is a deficient number, since it is larger than the sum of its proper divisors (1331897).

142501423 is a wasteful number, since it uses less digits than its factorization.

142501423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331896.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 142501423 is about 11937.3959890757. The cubic root of 142501423 is about 522.3237020350.

Adding to 142501423 its reverse (324105241), we get a palindrome (466606664).

The spelling of 142501423 in words is "one hundred forty-two million, five hundred one thousand, four hundred twenty-three".