142489913 has 2 divisors, whose sum is σ = 142489914. Its totient is φ = 142489912.

The previous prime is 142489909. The next prime is 142489931. The reversal of 142489913 is 319984241.

Together with next prime (142489931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86359849 + 56130064 = 9293^2 + 7492^2 .

It is a cyclic number.

It is not a de Polignac number, because 142489913 - 2² = 142489909 is a prime.

It is not a weakly prime, because it can be changed into another prime (142489933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71244956 + 71244957.

It is an arithmetic number, because the mean of its divisors is an integer number (71244957).

Almost surely, 2^142489913 is an apocalyptic number.

It is an amenable number.

142489913 is a deficient number, since it is larger than the sum of its proper divisors (1).

142489913 is an equidigital number, since it uses as much as digits as its factorization.

142489913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 41.

The square root of 142489913 is about 11936.9138808990. The cubic root of 142489913 is about 522.3096387656.

The spelling of 142489913 in words is "one hundred forty-two million, four hundred eighty-nine thousand, nine hundred thirteen".