1154020043 has 16 divisors (see below), whose sum is σ = 1367946240. Its totient is φ = 961826400.

The previous prime is 1154020031. The next prime is 1154020051. The reversal of 1154020043 is 3400204511.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1154020043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1154019997 and 1154020024.

It is not an unprimeable number, because it can be changed into a prime (1154022043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82580 + ... + 95537.

It is an arithmetic number, because the mean of its divisors is an integer number (85496640).

Almost surely, 2^1154020043 is an apocalyptic number.

1154020043 is a deficient number, since it is larger than the sum of its proper divisors (213926197).

1154020043 is a wasteful number, since it uses less digits than its factorization.

1154020043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178178.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1154020043 is about 33970.8705069505. The cubic root of 1154020043 is about 1048.9089325624.

Adding to 1154020043 its reverse (3400204511), we get a palindrome (4554224554).

The spelling of 1154020043 in words is "one billion, one hundred fifty-four million, twenty thousand, forty-three".