201942617 has 4 divisors (see below), whose sum is σ = 202661556. Its totient is φ = 201223680.

The previous prime is 201942607. The next prime is 201942641. The reversal of 201942617 is 716249102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87965641 + 113976976 = 9379^2 + 10676^2 .

It is a cyclic number.

It is not a de Polignac number, because 201942617 - 2²⁰ = 200894041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201942607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359048 + ... + 359609.

It is an arithmetic number, because the mean of its divisors is an integer number (50665389).

Almost surely, 2^201942617 is an apocalyptic number.

It is an amenable number.

201942617 is a deficient number, since it is larger than the sum of its proper divisors (718939).

201942617 is an equidigital number, since it uses as much as digits as its factorization.

201942617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718938.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 201942617 is about 14210.6515332690. The cubic root of 201942617 is about 586.6908657302.

The spelling of 201942617 in words is "two hundred one million, nine hundred forty-two thousand, six hundred seventeen".