1200342961 has 2 divisors, whose sum is σ = 1200342962. Its totient is φ = 1200342960.

The previous prime is 1200342959. The next prime is 1200343091. The reversal of 1200342961 is 1692430021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1096934400 + 103408561 = 33120^2 + 10169^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200342961 - 2¹ = 1200342959 is a prime.

Together with 1200342959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1200342761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600171480 + 600171481.

It is an arithmetic number, because the mean of its divisors is an integer number (600171481).

Almost surely, 2^1200342961 is an apocalyptic number.

It is an amenable number.

1200342961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200342961 is an equidigital number, since it uses as much as digits as its factorization.

1200342961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1200342961 is about 34645.9660133759. The cubic root of 1200342961 is about 1062.7597957745.

Adding to 1200342961 its reverse (1692430021), we get a palindrome (2892772982).

The spelling of 1200342961 in words is "one billion, two hundred million, three hundred forty-two thousand, nine hundred sixty-one".