842187132 has 60 divisors (see below), whose sum is σ = 2208576216. Its totient is φ = 279845280.

The previous prime is 842187131. The next prime is 842187149. The reversal of 842187132 is 231781248.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842187131) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 103318 + ... + 111170.

Almost surely, 2^842187132 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 842187132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1104288108).

842187132 is an abundant number, since it is smaller than the sum of its proper divisors (1366389084).

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

842187132 is a wasteful number, since it uses less digits than its factorization.

842187132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8200 (or 8189 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 842187132 is about 29020.4605752562. The cubic root of 842187132 is about 944.3569926602.

The spelling of 842187132 in words is "eight hundred forty-two million, one hundred eighty-seven thousand, one hundred thirty-two".