142011323 has 4 divisors (see below), whose sum is σ = 143048040. Its totient is φ = 140974608.

The previous prime is 142011313. The next prime is 142011329. The reversal of 142011323 is 323110241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323110241 = 31 ⋅10422911.

It is a cyclic number.

It is not a de Polignac number, because 142011323 - 2⁴ = 142011307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142011329) 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, 518153 + ... + 518426.

It is an arithmetic number, because the mean of its divisors is an integer number (35762010).

Almost surely, 2^142011323 is an apocalyptic number.

142011323 is a deficient number, since it is larger than the sum of its proper divisors (1036717).

142011323 is a wasteful number, since it uses less digits than its factorization.

142011323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036716.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 142011323 is about 11916.8503808683. The cubic root of 142011323 is about 521.7242112220.

Adding to 142011323 its reverse (323110241), we get a palindrome (465121564).

The spelling of 142011323 in words is "one hundred forty-two million, eleven thousand, three hundred twenty-three".