842421061 has 8 divisors (see below), whose sum is σ = 858885120. Its totient is φ = 825978192.

The previous prime is 842420983. The next prime is 842421067. The reversal of 842421061 is 160124248.

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 842421061 - 2⁹ = 842420549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842421067) 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, 92260 + ... + 100978.

It is an arithmetic number, because the mean of its divisors is an integer number (107360640).

Almost surely, 2^842421061 is an apocalyptic number.

It is an amenable number.

842421061 is a deficient number, since it is larger than the sum of its proper divisors (16464059).

842421061 is a wasteful number, since it uses less digits than its factorization.

842421061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10595.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 842421061 is about 29024.4907104328. The cubic root of 842421061 is about 944.4444205916. Note that the first 4 decimals are identical.

The spelling of 842421061 in words is "eight hundred forty-two million, four hundred twenty-one thousand, sixty-one".