243124022541 has 4 divisors (see below), whose sum is σ = 324165363392. Its totient is φ = 162082681692.

The previous prime is 243124022467. The next prime is 243124022579. The reversal of 243124022541 is 145220421342.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 243124022541 - 2¹⁴ = 243124006157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243124022499 and 243124022508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243124024541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40520670421 + ... + 40520670426.

It is an arithmetic number, because the mean of its divisors is an integer number (81041340848).

Almost surely, 2^243124022541 is an apocalyptic number.

It is an amenable number.

243124022541 is a deficient number, since it is larger than the sum of its proper divisors (81041340851).

243124022541 is an equidigital number, since it uses as much as digits as its factorization.

243124022541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81041340850.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 243124022541 its reverse (145220421342), we get a palindrome (388344443883).

The spelling of 243124022541 in words is "two hundred forty-three billion, one hundred twenty-four million, twenty-two thousand, five hundred forty-one".