1153242111 has 16 divisors (see below), whose sum is σ = 1757952000. Its totient is φ = 658759008.

The previous prime is 1153242109. The next prime is 1153242151. The reversal of 1153242111 is 1112423511.

It is not a de Polignac number, because 1153242111 - 2¹ = 1153242109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153242151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62365 + ... + 78713.

It is an arithmetic number, because the mean of its divisors is an integer number (109872000).

Almost surely, 2^1153242111 is an apocalyptic number.

1153242111 is a deficient number, since it is larger than the sum of its proper divisors (604709889).

1153242111 is a wasteful number, since it uses less digits than its factorization.

1153242111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19718.

The product of its digits is 240, while the sum is 21.

The square root of 1153242111 is about 33959.4185904294. The cubic root of 1153242111 is about 1048.6731875972.

Adding to 1153242111 its reverse (1112423511), we get a palindrome (2265665622).

The spelling of 1153242111 in words is "one billion, one hundred fifty-three million, two hundred forty-two thousand, one hundred eleven".