142799197 has 2 divisors, whose sum is σ = 142799198. Its totient is φ = 142799196.

The previous prime is 142799191. The next prime is 142799213. The reversal of 142799197 is 791997241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105966436 + 36832761 = 10294^2 + 6069^2 .

It is a cyclic number.

It is not a de Polignac number, because 142799197 - 2²³ = 134410589 is a prime.

It is a super-2 number, since 2×142799197² = 40783221327689618, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142799197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142799191) 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, 71399598 + 71399599.

It is an arithmetic number, because the mean of its divisors is an integer number (71399599).

Almost surely, 2^142799197 is an apocalyptic number.

It is an amenable number.

142799197 is a deficient number, since it is larger than the sum of its proper divisors (1).

142799197 is an equidigital number, since it uses as much as digits as its factorization.

142799197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 285768, while the sum is 49.

The square root of 142799197 is about 11949.8617983640. The cubic root of 142799197 is about 522.6872684807.

The spelling of 142799197 in words is "one hundred forty-two million, seven hundred ninety-nine thousand, one hundred ninety-seven".