842232540 has 96 divisors (see below), whose sum is σ = 2432457216. Its totient is φ = 217634560.

The previous prime is 842232539. The next prime is 842232541. The reversal of 842232540 is 45232248.

It is an interprime number because it is at equal distance from previous prime (842232539) and next prime (842232541).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 842232498 and 842232507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842232541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 262345 + ... + 265535.

It is an arithmetic number, because the mean of its divisors is an integer number (25338096).

Almost surely, 2^842232540 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 842232540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1216228608).

842232540 is an abundant number, since it is smaller than the sum of its proper divisors (1590224676).

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

842232540 is a wasteful number, since it uses less digits than its factorization.

842232540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339 (or 3337 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 842232540 is about 29021.2429092897. The cubic root of 842232540 is about 944.3739645778.

Adding to 842232540 its reverse (45232248), we get a palindrome (887464788).

The spelling of 842232540 in words is "eight hundred forty-two million, two hundred thirty-two thousand, five hundred forty".