1145201043 has 16 divisors (see below), whose sum is σ = 1745824256. Its totient is φ = 654117120.

The previous prime is 1145201017. The next prime is 1145201081. The reversal of 1145201043 is 3401025411.

It is not a de Polignac number, because 1145201043 - 2⁵ = 1145201011 is a prime.

It is a super-2 number, since 2×1145201043² = 2622970857776575698, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145201093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43938 + ... + 64968.

It is an arithmetic number, because the mean of its divisors is an integer number (109114016).

Almost surely, 2^1145201043 is an apocalyptic number.

1145201043 is a deficient number, since it is larger than the sum of its proper divisors (600623213).

1145201043 is a wasteful number, since it uses less digits than its factorization.

1145201043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23634.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1145201043 is about 33840.8191833472. The cubic root of 1145201043 is about 1046.2301830042.

Adding to 1145201043 its reverse (3401025411), we get a palindrome (4546226454).

The spelling of 1145201043 in words is "one billion, one hundred forty-five million, two hundred one thousand, forty-three".