1203940242017 has 2 divisors, whose sum is σ = 1203940242018. Its totient is φ = 1203940242016.

The previous prime is 1203940241993. The next prime is 1203940242023. The reversal of 1203940242017 is 7102420493021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 824898081121 + 379042160896 = 908239^2 + 615664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203940242017 - 2²⁶ = 1203873133153 is a prime.

It is a super-3 number, since 3×1203940242017³ (a number of 37 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1203940242047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601970121008 + 601970121009.

It is an arithmetic number, because the mean of its divisors is an integer number (601970121009).

Almost surely, 2^{1203940242017} is an apocalyptic number.

It is an amenable number.

1203940242017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203940242017 is an equidigital number, since it uses as much as digits as its factorization.

1203940242017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 1203940242017 in words is "one trillion, two hundred three billion, nine hundred forty million, two hundred forty-two thousand, seventeen".