1154342043 has 32 divisors (see below), whose sum is σ = 1750348800. Its totient is φ = 751539168.

The previous prime is 1154342027. The next prime is 1154342047. The reversal of 1154342043 is 3402434511.

It is a happy number.

It is not a de Polignac number, because 1154342043 - 2⁴ = 1154342027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1154341998 and 1154342016.

It is not an unprimeable number, because it can be changed into a prime (1154342047) 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 31 ways as a sum of consecutive naturals, for example, 899080 + ... + 900362.

It is an arithmetic number, because the mean of its divisors is an integer number (54698400).

Almost surely, 2^1154342043 is an apocalyptic number.

1154342043 is a deficient number, since it is larger than the sum of its proper divisors (596006757).

1154342043 is a wasteful number, since it uses less digits than its factorization.

1154342043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2048 (or 2042 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1154342043 is about 33975.6095309562. The cubic root of 1154342043 is about 1049.0064806278.

Adding to 1154342043 its reverse (3402434511), we get a palindrome (4556776554).

The spelling of 1154342043 in words is "one billion, one hundred fifty-four million, three hundred forty-two thousand, forty-three".