1153541421 has 6 divisors (see below), whose sum is σ = 1666226510. Its totient is φ = 769027608.

The previous prime is 1153541419. The next prime is 1153541429. The reversal of 1153541421 is 1241453511.

1153541421 is a `hidden beast` number, since 115 + 3 + 541 + 4 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1037548521 + 115992900 = 32211^2 + 10770^2 .

It is not a de Polignac number, because 1153541421 - 2¹ = 1153541419 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 (1153541429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64085626 + ... + 64085643.

Almost surely, 2^1153541421 is an apocalyptic number.

It is an amenable number.

1153541421 is a deficient number, since it is larger than the sum of its proper divisors (512685089).

1153541421 is a wasteful number, since it uses less digits than its factorization.

1153541421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128171275 (or 128171272 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 1153541421 is about 33963.8251820963. The cubic root of 1153541421 is about 1048.7639032177.

Adding to 1153541421 its reverse (1241453511), we get a palindrome (2394994932).

The spelling of 1153541421 in words is "one billion, one hundred fifty-three million, five hundred forty-one thousand, four hundred twenty-one".