142788013 has 2 divisors, whose sum is σ = 142788014. Its totient is φ = 142788012.

The previous prime is 142788011. The next prime is 142788047. The reversal of 142788013 is 310887241.

It is a happy number.

It is an a-pointer prime, because the next prime (142788047) can be obtained adding 142788013 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101545929 + 41242084 = 10077^2 + 6422^2 .

It is a cyclic number.

It is not a de Polignac number, because 142788013 - 2¹ = 142788011 is a prime.

Together with 142788011, 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 142788013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142788011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71394006 + 71394007.

It is an arithmetic number, because the mean of its divisors is an integer number (71394007).

Almost surely, 2^142788013 is an apocalyptic number.

It is an amenable number.

142788013 is a deficient number, since it is larger than the sum of its proper divisors (1).

142788013 is an equidigital number, since it uses as much as digits as its factorization.

142788013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 142788013 is about 11949.3938339984. The cubic root of 142788013 is about 522.6736225426.

The spelling of 142788013 in words is "one hundred forty-two million, seven hundred eighty-eight thousand, thirteen".