804239143 has 2 divisors, whose sum is σ = 804239144. Its totient is φ = 804239142.

The previous prime is 804239131. The next prime is 804239147. The reversal of 804239143 is 341932408.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 804239143 - 2²⁵ = 770684711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 804239099 and 804239108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804239147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402119571 + 402119572.

It is an arithmetic number, because the mean of its divisors is an integer number (402119572).

Almost surely, 2^804239143 is an apocalyptic number.

804239143 is a deficient number, since it is larger than the sum of its proper divisors (1).

804239143 is an equidigital number, since it uses as much as digits as its factorization.

804239143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 804239143 is about 28359.1104056527. The cubic root of 804239143 is about 929.9545755745.

The spelling of 804239143 in words is "eight hundred four million, two hundred thirty-nine thousand, one hundred forty-three".