42032140440 has 128 divisors (see below), whose sum is σ = 128389536000. Its totient is φ = 11005203968.

The previous prime is 42032140387. The next prime is 42032140453. The reversal of 42032140440 is 4404123024.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 42032140440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6701626 + ... + 6707894.

It is an arithmetic number, because the mean of its divisors is an integer number (1003043250).

Almost surely, 2^42032140440 is an apocalyptic number.

42032140440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42032140440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64194768000).

42032140440 is an abundant number, since it is smaller than the sum of its proper divisors (86357395560).

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

42032140440 is a wasteful number, since it uses less digits than its factorization.

42032140440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7289 (or 7285 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 42032140440 its reverse (4404123024), we get a palindrome (46436263464).

The spelling of 42032140440 in words is "forty-two billion, thirty-two million, one hundred forty thousand, four hundred forty".