142790189 has 2 divisors, whose sum is σ = 142790190. Its totient is φ = 142790188.

The previous prime is 142790173. The next prime is 142790213. The reversal of 142790189 is 981097241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128029225 + 14760964 = 11315^2 + 3842^2 .

It is a cyclic number.

It is not a de Polignac number, because 142790189 - 2⁴ = 142790173 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 (142790689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71395094 + 71395095.

It is an arithmetic number, because the mean of its divisors is an integer number (71395095).

Almost surely, 2^142790189 is an apocalyptic number.

It is an amenable number.

142790189 is a deficient number, since it is larger than the sum of its proper divisors (1).

142790189 is an equidigital number, since it uses as much as digits as its factorization.

142790189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 142790189 is about 11949.4848842952. The cubic root of 142790189 is about 522.6762776021.

The spelling of 142790189 in words is "one hundred forty-two million, seven hundred ninety thousand, one hundred eighty-nine".