142217573 has 2 divisors, whose sum is σ = 142217574. Its totient is φ = 142217572.

The previous prime is 142217531. The next prime is 142217599. The reversal of 142217573 is 375712241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136375684 + 5841889 = 11678^2 + 2417^2 .

It is a cyclic number.

It is not a de Polignac number, because 142217573 - 2²² = 138023269 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 (142217503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71108786 + 71108787.

It is an arithmetic number, because the mean of its divisors is an integer number (71108787).

Almost surely, 2^142217573 is an apocalyptic number.

It is an amenable number.

142217573 is a deficient number, since it is larger than the sum of its proper divisors (1).

142217573 is an equidigital number, since it uses as much as digits as its factorization.

142217573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 32.

The square root of 142217573 is about 11925.5009538384. The cubic root of 142217573 is about 521.9766642534.

The spelling of 142217573 in words is "one hundred forty-two million, two hundred seventeen thousand, five hundred seventy-three".