1141820543 has 4 divisors (see below), whose sum is σ = 1142098080. Its totient is φ = 1141543008.

The previous prime is 1141820531. The next prime is 1141820573. The reversal of 1141820543 is 3450281411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3450281411 = 5953 ⋅579587.

It is a cyclic number.

It is not a de Polignac number, because 1141820543 - 2⁴ = 1141820527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141820573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132503 + ... + 140856.

It is an arithmetic number, because the mean of its divisors is an integer number (285524520).

Almost surely, 2^1141820543 is an apocalyptic number.

1141820543 is a deficient number, since it is larger than the sum of its proper divisors (277537).

1141820543 is an equidigital number, since it uses as much as digits as its factorization.

1141820543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277536.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 1141820543 is about 33790.8351924009. The cubic root of 1141820543 is about 1045.1997185488.

The spelling of 1141820543 in words is "one billion, one hundred forty-one million, eight hundred twenty thousand, five hundred forty-three".