142112189 has 2 divisors, whose sum is σ = 142112190. Its totient is φ = 142112188.

The previous prime is 142112171. The next prime is 142112207. The reversal of 142112189 is 981211241.

It is a balanced prime because it is at equal distance from previous prime (142112171) and next prime (142112207).

It can be written as a sum of positive squares in only one way, i.e., 127351225 + 14760964 = 11285^2 + 3842^2 .

It is a cyclic number.

It is not a de Polignac number, because 142112189 - 2²⁴ = 125334973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142112149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71056094 + 71056095.

It is an arithmetic number, because the mean of its divisors is an integer number (71056095).

Almost surely, 2^142112189 is an apocalyptic number.

It is an amenable number.

142112189 is a deficient number, since it is larger than the sum of its proper divisors (1).

142112189 is an equidigital number, since it uses as much as digits as its factorization.

142112189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 29.

The square root of 142112189 is about 11921.0817042750. The cubic root of 142112189 is about 521.8477032061.

The spelling of 142112189 in words is "one hundred forty-two million, one hundred twelve thousand, one hundred eighty-nine".