5243665123 has 8 divisors (see below), whose sum is σ = 5404838192. Its totient is φ = 5083515936.

The previous prime is 5243665093. The next prime is 5243665157. The reversal of 5243665123 is 3215663425.

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 5243665123 - 2¹³ = 5243656931 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5243665423) 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 7 ways as a sum of consecutive naturals, for example, 245565 + ... + 266062.

It is an arithmetic number, because the mean of its divisors is an integer number (675604774).

Almost surely, 2^5243665123 is an apocalyptic number.

5243665123 is a deficient number, since it is larger than the sum of its proper divisors (161173069).

5243665123 is a wasteful number, since it uses less digits than its factorization.

5243665123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511941.

The product of its digits is 129600, while the sum is 37.

The square root of 5243665123 is about 72413.1557315382. The cubic root of 5243665123 is about 1737.3139870772.

The spelling of 5243665123 in words is "five billion, two hundred forty-three million, six hundred sixty-five thousand, one hundred twenty-three".