142611389 has 2 divisors, whose sum is σ = 142611390. Its totient is φ = 142611388.

The previous prime is 142611331. The next prime is 142611401. The reversal of 142611389 is 983116241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142611364 + 25 = 11942^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 142611389 - 2¹⁶ = 142545853 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 (142610389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71305694 + 71305695.

It is an arithmetic number, because the mean of its divisors is an integer number (71305695).

Almost surely, 2^142611389 is an apocalyptic number.

It is an amenable number.

142611389 is a deficient number, since it is larger than the sum of its proper divisors (1).

142611389 is an equidigital number, since it uses as much as digits as its factorization.

142611389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 142611389 is about 11942.0010467258. The cubic root of 142611389 is about 522.4580236876.

The spelling of 142611389 in words is "one hundred forty-two million, six hundred eleven thousand, three hundred eighty-nine".