142199977 has 2 divisors, whose sum is σ = 142199978. Its totient is φ = 142199976.

The previous prime is 142199923. The next prime is 142200041. The reversal of 142199977 is 779991241.

142199977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115326121 + 26873856 = 10739^2 + 5184^2 .

It is an emirp because it is prime and its reverse (779991241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142199977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142199977.

It is not a weakly prime, because it can be changed into another prime (142199377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71099988 + 71099989.

It is an arithmetic number, because the mean of its divisors is an integer number (71099989).

Almost surely, 2^142199977 is an apocalyptic number.

It is an amenable number.

142199977 is a deficient number, since it is larger than the sum of its proper divisors (1).

142199977 is an equidigital number, since it uses as much as digits as its factorization.

142199977 is an evil number, because the sum of its binary digits is even.

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

The square root of 142199977 is about 11924.7631842314. The cubic root of 142199977 is about 521.9551360179.

The spelling of 142199977 in words is "one hundred forty-two million, one hundred ninety-nine thousand, nine hundred seventy-seven".