1201045443 has 16 divisors (see below), whose sum is σ = 1748871936. Its totient is φ = 728693280.

The previous prime is 1201045399. The next prime is 1201045481. The reversal of 1201045443 is 3445401021.

It is not a de Polignac number, because 1201045443 - 2⁹ = 1201044931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201043443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214105 + ... + 219642.

It is an arithmetic number, because the mean of its divisors is an integer number (109304496).

Almost surely, 2^1201045443 is an apocalyptic number.

1201045443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1201045443 is a deficient number, since it is larger than the sum of its proper divisors (547826493).

1201045443 is a wasteful number, since it uses less digits than its factorization.

1201045443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433834.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1201045443 is about 34656.1025362057. The cubic root of 1201045443 is about 1062.9670765432.

Adding to 1201045443 its reverse (3445401021), we get a palindrome (4646446464).

The spelling of 1201045443 in words is "one billion, two hundred one million, forty-five thousand, four hundred forty-three".