1143520005 has 16 divisors (see below), whose sum is σ = 1860644160. Its totient is φ = 599539968.

The previous prime is 1143519947. The next prime is 1143520009. The reversal of 1143520005 is 5000253411.

It is not a de Polignac number, because 1143520005 - 2¹¹ = 1143517957 is a prime.

It is a super-3 number, since 3×1143520005³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143520009) 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, 645172 + ... + 646941.

It is an arithmetic number, because the mean of its divisors is an integer number (116290260).

Almost surely, 2^1143520005 is an apocalyptic number.

1143520005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1143520005 is a deficient number, since it is larger than the sum of its proper divisors (717124155).

1143520005 is a wasteful number, since it uses less digits than its factorization.

1143520005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292180.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1143520005 is about 33815.9726312877. The cubic root of 1143520005 is about 1045.7180126844.

Adding to 1143520005 its reverse (5000253411), we get a palindrome (6143773416).

The spelling of 1143520005 in words is "one billion, one hundred forty-three million, five hundred twenty thousand, five".