842017845 has 8 divisors (see below), whose sum is σ = 1347228576. Its totient is φ = 449076176.

The previous prime is 842017829. The next prime is 842017853. The reversal of 842017845 is 548710248.

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 not a de Polignac number, because 842017845 - 2⁴ = 842017829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28067247 + ... + 28067276.

It is an arithmetic number, because the mean of its divisors is an integer number (168403572).

Almost surely, 2^842017845 is an apocalyptic number.

It is an amenable number.

842017845 is a deficient number, since it is larger than the sum of its proper divisors (505210731).

842017845 is a wasteful number, since it uses less digits than its factorization.

842017845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56134531.

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 842017845 is about 29017.5437451208. The cubic root of 842017845 is about 944.2937137408.

The spelling of 842017845 in words is "eight hundred forty-two million, seventeen thousand, eight hundred forty-five".