1201302643 has 16 divisors (see below), whose sum is σ = 1246795200. Its totient is φ = 1156571136.

The previous prime is 1201302631. The next prime is 1201302679. The reversal of 1201302643 is 3462031021.

It is a cyclic number.

It is not a de Polignac number, because 1201302643 - 2⁹ = 1201302131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201302623) 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 in 15 ways as a sum of consecutive naturals, for example, 2675283 + ... + 2675731.

It is an arithmetic number, because the mean of its divisors is an integer number (77924700).

Almost surely, 2^1201302643 is an apocalyptic number.

1201302643 is a deficient number, since it is larger than the sum of its proper divisors (45492557).

1201302643 is a wasteful number, since it uses less digits than its factorization.

1201302643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1201302643 is about 34659.8130837430. The cubic root of 1201302643 is about 1063.0429481156.

Adding to 1201302643 its reverse (3462031021), we get a palindrome (4663333664).

The spelling of 1201302643 in words is "one billion, two hundred one million, three hundred two thousand, six hundred forty-three".