40322344240 has 120 divisors (see below), whose sum is σ = 95983419168. Its totient is φ = 15750420480.

The previous prime is 40322344189. The next prime is 40322344243. The reversal of 40322344240 is 4244322304.

It is a happy number.

It is a super-2 number, since 2×40322344240² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40322344199 and 40322344208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40322344243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129653685 + ... + 129653995.

Almost surely, 2^40322344240 is an apocalyptic number.

40322344240 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 40322344240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47991709584).

40322344240 is an abundant number, since it is smaller than the sum of its proper divisors (55661074928).

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

40322344240 is a wasteful number, since it uses less digits than its factorization.

40322344240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 40322344240 its reverse (4244322304), we get a palindrome (44566666544).

The spelling of 40322344240 in words is "forty billion, three hundred twenty-two million, three hundred forty-four thousand, two hundred forty".