142489129 has 2 divisors, whose sum is σ = 142489130. Its totient is φ = 142489128.

The previous prime is 142489111. The next prime is 142489169. The reversal of 142489129 is 921984241.

142489129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (142489169) can be obtained adding 142489129 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83997225 + 58491904 = 9165^2 + 7648^2 .

It is a cyclic number.

It is not a de Polignac number, because 142489129 - 2⁵ = 142489097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142489091 and 142489100.

It is not a weakly prime, because it can be changed into another prime (142489169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71244564 + 71244565.

It is an arithmetic number, because the mean of its divisors is an integer number (71244565).

Almost surely, 2^142489129 is an apocalyptic number.

It is an amenable number.

142489129 is a deficient number, since it is larger than the sum of its proper divisors (1).

142489129 is an equidigital number, since it uses as much as digits as its factorization.

142489129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 40.

The square root of 142489129 is about 11936.8810415451. The cubic root of 142489129 is about 522.3086808229.

The spelling of 142489129 in words is "one hundred forty-two million, four hundred eighty-nine thousand, one hundred twenty-nine".