40321442040 has 128 divisors (see below), whose sum is σ = 138906489600. Its totient is φ = 9260421120.

The previous prime is 40321442023. The next prime is 40321442089. The reversal of 40321442040 is 4024412304.

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 40321442040.

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, 778777 + ... + 828936.

It is an arithmetic number, because the mean of its divisors is an integer number (1085206950).

Almost surely, 2^40321442040 is an apocalyptic number.

40321442040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40321442040 is an abundant number, since it is smaller than the sum of its proper divisors (98585047560).

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

40321442040 is a wasteful number, since it uses less digits than its factorization.

40321442040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607757 (or 1607753 counting only the distinct ones).

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

Adding to 40321442040 its reverse (4024412304), we get a palindrome (44345854344).

The spelling of 40321442040 in words is "forty billion, three hundred twenty-one million, four hundred forty-two thousand, forty".