860042005 has 4 divisors (see below), whose sum is σ = 1032050412. Its totient is φ = 688033600.

The previous prime is 860041979. The next prime is 860042017. The reversal of 860042005 is 500240068.

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

It can be written as a sum of positive squares in 2 ways, for example, as 328370641 + 531671364 = 18121^2 + 23058^2 .

It is a de Polignac number, because none of the positive numbers 2^k-860042005 is a prime.

It is a super-3 number, since 3×860042005³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86004196 + ... + 86004205.

It is an arithmetic number, because the mean of its divisors is an integer number (258012603).

Almost surely, 2^860042005 is an apocalyptic number.

It is an amenable number.

860042005 is a deficient number, since it is larger than the sum of its proper divisors (172008407).

860042005 is a wasteful number, since it uses less digits than its factorization.

860042005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172008406.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 860042005 is about 29326.4727677912. The cubic root of 860042005 is about 950.9840237799.

It can be divided in two parts, 8600 and 42005, that added together give a palindrome (50605).

The spelling of 860042005 in words is "eight hundred sixty million, forty-two thousand, five".