2145054243 has 8 divisors (see below), whose sum is σ = 2937371728. Its totient is φ = 1391386464.

The previous prime is 2145054211. The next prime is 2145054293. The reversal of 2145054243 is 3424505412.

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

It is not a de Polignac number, because 2145054243 - 2⁵ = 2145054211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2145054243.

It is not an unprimeable number, because it can be changed into a prime (2145054293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9662296 + ... + 9662517.

It is an arithmetic number, because the mean of its divisors is an integer number (367171466).

Almost surely, 2^2145054243 is an apocalyptic number.

2145054243 is a deficient number, since it is larger than the sum of its proper divisors (792317485).

2145054243 is a wasteful number, since it uses less digits than its factorization.

2145054243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19324853.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 2145054243 is about 46314.7303025722. The cubic root of 2145054243 is about 1289.6724611612.

Adding to 2145054243 its reverse (3424505412), we get a palindrome (5569559655).

The spelling of 2145054243 in words is "two billion, one hundred forty-five million, fifty-four thousand, two hundred forty-three".