142764439 has 2 divisors, whose sum is σ = 142764440. Its totient is φ = 142764438.

The previous prime is 142764431. The next prime is 142764443. The reversal of 142764439 is 934467241.

It is a strong prime.

It is an emirp because it is prime and its reverse (934467241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142764439 - 2³ = 142764431 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142764431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71382219 + 71382220.

It is an arithmetic number, because the mean of its divisors is an integer number (71382220).

Almost surely, 2^142764439 is an apocalyptic number.

142764439 is a deficient number, since it is larger than the sum of its proper divisors (1).

142764439 is an equidigital number, since it uses as much as digits as its factorization.

142764439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 40.

The square root of 142764439 is about 11948.4073834131. The cubic root of 142764439 is about 522.6448568550.

The spelling of 142764439 in words is "one hundred forty-two million, seven hundred sixty-four thousand, four hundred thirty-nine".