243125440123 has 8 divisors (see below), whose sum is σ = 251023877120. Its totient is φ = 235230483240.

The previous prime is 243125440111. The next prime is 243125440127. The reversal of 243125440123 is 321044521342.

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 243125440123 - 2⁵ = 243125440091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243125440127) 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, 727665 + ... + 1007842.

It is an arithmetic number, because the mean of its divisors is an integer number (31377984640).

Almost surely, 2^243125440123 is an apocalyptic number.

243125440123 is a deficient number, since it is larger than the sum of its proper divisors (7898436997).

243125440123 is a wasteful number, since it uses less digits than its factorization.

243125440123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740057.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 243125440123 its reverse (321044521342), we get a palindrome (564169961465).

The spelling of 243125440123 in words is "two hundred forty-three billion, one hundred twenty-five million, four hundred forty thousand, one hundred twenty-three".