1155432142 has 16 divisors (see below), whose sum is σ = 1825891200. Its totient is φ = 546852600.

The previous prime is 1155432139. The next prime is 1155432197. The reversal of 1155432142 is 2412345511.

It is a self number, because there is not a number n which added to its sum of digits gives 1155432142.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 35767 + ... + 59917.

It is an arithmetic number, because the mean of its divisors is an integer number (114118200).

Almost surely, 2^1155432142 is an apocalyptic number.

1155432142 is a deficient number, since it is larger than the sum of its proper divisors (670459058).

1155432142 is a wasteful number, since it uses less digits than its factorization.

1155432142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25431.

The product of its digits is 4800, while the sum is 28.

The square root of 1155432142 is about 33991.6481212665. The cubic root of 1155432142 is about 1049.3365853113.

Adding to 1155432142 its reverse (2412345511), we get a palindrome (3567777653).

The spelling of 1155432142 in words is "one billion, one hundred fifty-five million, four hundred thirty-two thousand, one hundred forty-two".