1202341561 has 2 divisors, whose sum is σ = 1202341562. Its totient is φ = 1202341560.

The previous prime is 1202341519. The next prime is 1202341573. The reversal of 1202341561 is 1651432021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 751034025 + 451307536 = 27405^2 + 21244^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202341561 - 2⁷ = 1202341433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1202341661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601170780 + 601170781.

It is an arithmetic number, because the mean of its divisors is an integer number (601170781).

Almost surely, 2^1202341561 is an apocalyptic number.

It is an amenable number.

1202341561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202341561 is an equidigital number, since it uses as much as digits as its factorization.

1202341561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1202341561 is about 34674.7972020025. The cubic root of 1202341561 is about 1063.3493089474.

Adding to 1202341561 its reverse (1651432021), we get a palindrome (2853773582).

The spelling of 1202341561 in words is "one billion, two hundred two million, three hundred forty-one thousand, five hundred sixty-one".