842140672 has 44 divisors (see below), whose sum is σ = 1687399416. Its totient is φ = 420085760.

The previous prime is 842140643. The next prime is 842140687. The reversal of 842140672 is 276041248.

It is a happy number.

It is a super-3 number, since 3×842140672³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 655743 + ... + 657025.

Almost surely, 2^842140672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 842140672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (843699708).

842140672 is an abundant number, since it is smaller than the sum of its proper divisors (845258744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

842140672 is a wasteful number, since it uses less digits than its factorization.

842140672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944 (or 1926 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 842140672 is about 29019.6600944946. The cubic root of 842140672 is about 944.3396269106.

The spelling of 842140672 in words is "eight hundred forty-two million, one hundred forty thousand, six hundred seventy-two".