1201045043 has 16 divisors (see below), whose sum is σ = 1401815040. Its totient is φ = 1017424800.

The previous prime is 1201045037. The next prime is 1201045051. The reversal of 1201045043 is 3405401021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201045043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201045033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34355 + ... + 59852.

It is an arithmetic number, because the mean of its divisors is an integer number (87613440).

Almost surely, 2^1201045043 is an apocalyptic number.

1201045043 is a deficient number, since it is larger than the sum of its proper divisors (200769997).

1201045043 is a wasteful number, since it uses less digits than its factorization.

1201045043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94298.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1201045043 is about 34656.0967652158. The cubic root of 1201045043 is about 1062.9669585385.

Adding to 1201045043 its reverse (3405401021), we get a palindrome (4606446064).

The spelling of 1201045043 in words is "one billion, two hundred one million, forty-five thousand, forty-three".