243121141005 has 32 divisors (see below), whose sum is σ = 391869923328. Its totient is φ = 128708827200.

The previous prime is 243121140991. The next prime is 243121141027. The reversal of 243121141005 is 500141121342.

It is not a de Polignac number, because 243121141005 - 2⁵ = 243121140973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1247100 + ... + 1428810.

It is an arithmetic number, because the mean of its divisors is an integer number (12245935104).

Almost surely, 2^243121141005 is an apocalyptic number.

It is an amenable number.

243121141005 is a deficient number, since it is larger than the sum of its proper divisors (148748782323).

243121141005 is a wasteful number, since it uses less digits than its factorization.

243121141005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182377.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 243121141005 its reverse (500141121342), we get a palindrome (743262262347).

It can be divided in two parts, 243121 and 141005, that added together give a triangular number (384126 = T₈₇₆).

The spelling of 243121141005 in words is "two hundred forty-three billion, one hundred twenty-one million, one hundred forty-one thousand, five".