1243124432541 has 12 divisors (see below), whose sum is σ = 1795638796380. Its totient is φ = 828742875840.

The previous prime is 1243124432467. The next prime is 1243124432573. The reversal of 1243124432541 is 1452344213421.

1243124432541 is a `hidden beast` number, since 1 + 2 + 43 + 1 + 2 + 44 + 32 + 541 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 815506526916 + 427617905625 = 903054^2 + 653925^2 .

It is not a de Polignac number, because 1243124432541 - 2¹⁰ = 1243124431517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1243124432496 and 1243124432505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243124432941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 771465 + ... + 1755393.

It is an arithmetic number, because the mean of its divisors is an integer number (149636566365).

Almost surely, 2^{1243124432541} is an apocalyptic number.

It is an amenable number.

1243124432541 is a deficient number, since it is larger than the sum of its proper divisors (552514363839).

1243124432541 is a wasteful number, since it uses less digits than its factorization.

1243124432541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124316 (or 1124313 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

Adding to 1243124432541 its reverse (1452344213421), we get a palindrome (2695468645962).

The spelling of 1243124432541 in words is "one trillion, two hundred forty-three billion, one hundred twenty-four million, four hundred thirty-two thousand, five hundred forty-one".