1040799143 has 4 divisors (see below), whose sum is σ = 1102022640. Its totient is φ = 979575648.

The previous prime is 1040799139. The next prime is 1040799187. The reversal of 1040799143 is 3419970401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1040799143 - 2² = 1040799139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1040799097 and 1040799106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040799113) 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, 30611723 + ... + 30611756.

It is an arithmetic number, because the mean of its divisors is an integer number (275505660).

Almost surely, 2^1040799143 is an apocalyptic number.

1040799143 is a deficient number, since it is larger than the sum of its proper divisors (61223497).

1040799143 is an equidigital number, since it uses as much as digits as its factorization.

1040799143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61223496.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 1040799143 is about 32261.4188001706. The cubic root of 1040799143 is about 1013.4188435482.

The spelling of 1040799143 in words is "one billion, forty million, seven hundred ninety-nine thousand, one hundred forty-three".