201242273 has 2 divisors, whose sum is σ = 201242274. Its totient is φ = 201242272.

The previous prime is 201242257. The next prime is 201242291. The reversal of 201242273 is 372242102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195804049 + 5438224 = 13993^2 + 2332^2 .

It is a cyclic number.

It is not a de Polignac number, because 201242273 - 2⁴ = 201242257 is a prime.

It is not a weakly prime, because it can be changed into another prime (201241273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100621136 + 100621137.

It is an arithmetic number, because the mean of its divisors is an integer number (100621137).

Almost surely, 2^201242273 is an apocalyptic number.

It is an amenable number.

201242273 is a deficient number, since it is larger than the sum of its proper divisors (1).

201242273 is an equidigital number, since it uses as much as digits as its factorization.

201242273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 201242273 is about 14185.9886155319. The cubic root of 201242273 is about 586.0118587605.

Adding to 201242273 its reverse (372242102), we get a palindrome (573484375).

The spelling of 201242273 in words is "two hundred one million, two hundred forty-two thousand, two hundred seventy-three".