804142139 has 8 divisors (see below), whose sum is σ = 831692160. Its totient is φ = 776692800.

The previous prime is 804142099. The next prime is 804142147. The reversal of 804142139 is 931241408.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-804142139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (804142039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8744 + ... + 41045.

It is an arithmetic number, because the mean of its divisors is an integer number (103961520).

Almost surely, 2^804142139 is an apocalyptic number.

804142139 is a deficient number, since it is larger than the sum of its proper divisors (27550021).

804142139 is a wasteful number, since it uses less digits than its factorization.

804142139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50341.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 804142139 is about 28357.4000747600. The cubic root of 804142139 is about 929.9171849793.

The spelling of 804142139 in words is "eight hundred four million, one hundred forty-two thousand, one hundred thirty-nine".