142188097 has 2 divisors, whose sum is σ = 142188098. Its totient is φ = 142188096.

The previous prime is 142188083. The next prime is 142188121. The reversal of 142188097 is 790881241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118461456 + 23726641 = 10884^2 + 4871^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142188097 is a prime.

It is not a weakly prime, because it can be changed into another prime (142108097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71094048 + 71094049.

It is an arithmetic number, because the mean of its divisors is an integer number (71094049).

Almost surely, 2^142188097 is an apocalyptic number.

It is an amenable number.

142188097 is a deficient number, since it is larger than the sum of its proper divisors (1).

142188097 is an equidigital number, since it uses as much as digits as its factorization.

142188097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 142188097 is about 11924.2650507274. The cubic root of 142188097 is about 521.9406001512.

The spelling of 142188097 in words is "one hundred forty-two million, one hundred eighty-eight thousand, ninety-seven".