142973297 has 2 divisors, whose sum is σ = 142973298. Its totient is φ = 142973296.

The previous prime is 142973141. The next prime is 142973317. The reversal of 142973297 is 792379241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96746896 + 46226401 = 9836^2 + 6799^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142973297 is a prime.

It is not a weakly prime, because it can be changed into another prime (142973797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71486648 + 71486649.

It is an arithmetic number, because the mean of its divisors is an integer number (71486649).

Almost surely, 2^142973297 is an apocalyptic number.

It is an amenable number.

142973297 is a deficient number, since it is larger than the sum of its proper divisors (1).

142973297 is an equidigital number, since it uses as much as digits as its factorization.

142973297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 142973297 is about 11957.1441824543. The cubic root of 142973297 is about 522.8996013655.

The spelling of 142973297 in words is "one hundred forty-two million, nine hundred seventy-three thousand, two hundred ninety-seven".