860000042 has 8 divisors (see below), whose sum is σ = 1407272832. Its totient is φ = 390909100.

The previous prime is 860000039. The next prime is 860000069. The reversal of 860000042 is 240000068.

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

It is a junction number, because it is equal to n+sod(n) for n = 859999969 and 860000023.

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, 19545434 + ... + 19545477.

It is an arithmetic number, because the mean of its divisors is an integer number (175909104).

Almost surely, 2^860000042 is an apocalyptic number.

860000042 is a deficient number, since it is larger than the sum of its proper divisors (547272790).

860000042 is a wasteful number, since it uses less digits than its factorization.

860000042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39090924.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 860000042 is about 29325.7573133244. The cubic root of 860000042 is about 950.9685567867.

The spelling of 860000042 in words is "eight hundred sixty million, forty-two", and thus it is an aban number.