11242043541 has 10 divisors (see below), whose sum is σ = 16793670102. Its totient is φ = 7494695640.

The previous prime is 11242043513. The next prime is 11242043551. The reversal of 11242043541 is 14534024211.

11242043541 is a `hidden beast` number, since 112 + 4 + 2 + 0 + 4 + 3 + 541 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9998000100 + 1244043441 = 99990^2 + 35271^2 .

It is not a de Polignac number, because 11242043541 - 2¹¹ = 11242041493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11242043551) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 69395250 + ... + 69395411.

Almost surely, 2^11242043541 is an apocalyptic number.

It is an amenable number.

11242043541 is a deficient number, since it is larger than the sum of its proper divisors (5551626561).

11242043541 is an equidigital number, since it uses as much as digits as its factorization.

11242043541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138790673 (or 138790664 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 11242043541 its reverse (14534024211), we get a palindrome (25776067752).

It can be divided in two parts, 112420 and 43541, that added together give a triangular number (155961 = T₅₅₈).

The spelling of 11242043541 in words is "eleven billion, two hundred forty-two million, forty-three thousand, five hundred forty-one".