142023317 has 4 divisors (see below), whose sum is σ = 144143136. Its totient is φ = 139903500.

The previous prime is 142023293. The next prime is 142023319. The reversal of 142023317 is 713320241.

142023317 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 713320241 = 11057 ⋅64513.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142023317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142023292 and 142023301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142023319) 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, 1059809 + ... + 1059942.

It is an arithmetic number, because the mean of its divisors is an integer number (36035784).

Almost surely, 2^142023317 is an apocalyptic number.

It is an amenable number.

142023317 is a deficient number, since it is larger than the sum of its proper divisors (2119819).

142023317 is an equidigital number, since it uses as much as digits as its factorization.

142023317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119818.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 142023317 is about 11917.3536072402. The cubic root of 142023317 is about 521.7388987458.

Adding to 142023317 its reverse (713320241), we get a palindrome (855343558).

The spelling of 142023317 in words is "one hundred forty-two million, twenty-three thousand, three hundred seventeen".