142190693 has 2 divisors, whose sum is σ = 142190694. Its totient is φ = 142190692.

The previous prime is 142190689. The next prime is 142190743. The reversal of 142190693 is 396091241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91738084 + 50452609 = 9578^2 + 7103^2 .

It is a cyclic number.

It is not a de Polignac number, because 142190693 - 2² = 142190689 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142190663) 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, 71095346 + 71095347.

It is an arithmetic number, because the mean of its divisors is an integer number (71095347).

Almost surely, 2^142190693 is an apocalyptic number.

It is an amenable number.

142190693 is a deficient number, since it is larger than the sum of its proper divisors (1).

142190693 is an equidigital number, since it uses as much as digits as its factorization.

142190693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 142190693 is about 11924.3739038995. The cubic root of 142190693 is about 521.9437765764.

The spelling of 142190693 in words is "one hundred forty-two million, one hundred ninety thousand, six hundred ninety-three".