2005147243 has 8 divisors (see below), whose sum is σ = 2209092336. Its totient is φ = 1804812000.

The previous prime is 2005147241. The next prime is 2005147267. The reversal of 2005147243 is 3427415002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2005147243 - 2¹ = 2005147241 is a prime.

It is a super-3 number, since 3×2005147243³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (2005147241) 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 7 ways as a sum of consecutive naturals, for example, 901296 + ... + 903517.

It is an arithmetic number, because the mean of its divisors is an integer number (276136542).

Almost surely, 2^2005147243 is an apocalyptic number.

2005147243 is a deficient number, since it is larger than the sum of its proper divisors (203945093).

2005147243 is a wasteful number, since it uses less digits than its factorization.

2005147243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804925.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 2005147243 is about 44778.8704971441. The cubic root of 2005147243 is about 1261.0009772834. Note that the first 3 decimals are identical.

The spelling of 2005147243 in words is "two billion, five million, one hundred forty-seven thousand, two hundred forty-three".