1154115142 has 12 divisors (see below), whose sum is σ = 1838997540. Its totient is φ = 543112736.

The previous prime is 1154115113. The next prime is 1154115223. The reversal of 1154115142 is 2415114511.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 997792 + ... + 998947.

It is an arithmetic number, because the mean of its divisors is an integer number (153249795).

Almost surely, 2^1154115142 is an apocalyptic number.

1154115142 is a deficient number, since it is larger than the sum of its proper divisors (684882398).

1154115142 is a wasteful number, since it uses less digits than its factorization.

1154115142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996775 (or 1996758 counting only the distinct ones).

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

The square root of 1154115142 is about 33972.2701920257. The cubic root of 1154115142 is about 1048.9377441506.

Adding to 1154115142 its reverse (2415114511), we get a palindrome (3569229653).

The spelling of 1154115142 in words is "one billion, one hundred fifty-four million, one hundred fifteen thousand, one hundred forty-two".