842277140 has 24 divisors (see below), whose sum is σ = 1784439720. Its totient is φ = 333928448.

The previous prime is 842277133. The next prime is 842277157. The reversal of 842277140 is 41772248.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 72658576 + 769618564 = 8524^2 + 27742^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 842277140.

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, 184085 + ... + 188604.

It is an arithmetic number, because the mean of its divisors is an integer number (74351655).

Almost surely, 2^842277140 is an apocalyptic number.

It is an amenable number.

842277140 is an abundant number, since it is smaller than the sum of its proper divisors (942162580).

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

842277140 is a wasteful number, since it uses less digits than its factorization.

842277140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372811 (or 372809 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 35.

The square root of 842277140 is about 29022.0113017689. The cubic root of 842277140 is about 944.3906338994.

The spelling of 842277140 in words is "eight hundred forty-two million, two hundred seventy-seven thousand, one hundred forty".