142020523 has 2 divisors, whose sum is σ = 142020524. Its totient is φ = 142020522.

The previous prime is 142020521. The next prime is 142020581. The reversal of 142020523 is 325020241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142020523 - 2¹ = 142020521 is a prime.

Together with 142020521, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 142020523.

It is not a weakly prime, because it can be changed into another prime (142020521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71010261 + 71010262.

It is an arithmetic number, because the mean of its divisors is an integer number (71010262).

Almost surely, 2^142020523 is an apocalyptic number.

142020523 is a deficient number, since it is larger than the sum of its proper divisors (1).

142020523 is an equidigital number, since it uses as much as digits as its factorization.

142020523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 142020523 is about 11917.2363826518. The cubic root of 142020523 is about 521.7354773638.

Adding to 142020523 its reverse (325020241), we get a palindrome (467040764).

The spelling of 142020523 in words is "one hundred forty-two million, twenty thousand, five hundred twenty-three".