142145723 has 2 divisors, whose sum is σ = 142145724. Its totient is φ = 142145722.

The previous prime is 142145699. The next prime is 142145741. The reversal of 142145723 is 327541241.

It is a strong prime.

It is an emirp because it is prime and its reverse (327541241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142145723 - 2⁸ = 142145467 is a prime.

It is not a weakly prime, because it can be changed into another prime (142145753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71072861 + 71072862.

It is an arithmetic number, because the mean of its divisors is an integer number (71072862).

Almost surely, 2^142145723 is an apocalyptic number.

142145723 is a deficient number, since it is larger than the sum of its proper divisors (1).

142145723 is an equidigital number, since it uses as much as digits as its factorization.

142145723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 29.

The square root of 142145723 is about 11922.4881211935. The cubic root of 142145723 is about 521.8887465178. Note that the first 3 decimals are identical.

Adding to 142145723 its reverse (327541241), we get a palindrome (469686964).

The spelling of 142145723 in words is "one hundred forty-two million, one hundred forty-five thousand, seven hundred twenty-three".