1121415541 has 4 divisors (see below), whose sum is σ = 1125883584. Its totient is φ = 1116947500.

The previous prime is 1121415497. The next prime is 1121415551. The reversal of 1121415541 is 1455141211.

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 a cyclic number.

It is not a de Polignac number, because 1121415541 - 2¹⁹ = 1120891253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121415551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2233645 + ... + 2234146.

It is an arithmetic number, because the mean of its divisors is an integer number (281470896).

Almost surely, 2^1121415541 is an apocalyptic number.

It is an amenable number.

1121415541 is a deficient number, since it is larger than the sum of its proper divisors (4468043).

1121415541 is an equidigital number, since it uses as much as digits as its factorization.

1121415541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4468042.

The product of its digits is 800, while the sum is 25.

The square root of 1121415541 is about 33487.5430720141. The cubic root of 1121415541 is about 1038.9361473875.

Adding to 1121415541 its reverse (1455141211), we get a palindrome (2576556752).

The spelling of 1121415541 in words is "one billion, one hundred twenty-one million, four hundred fifteen thousand, five hundred forty-one".