40144242340 has 96 divisors (see below), whose sum is σ = 94035513600. Its totient is φ = 14306181120.

The previous prime is 40144242337. The next prime is 40144242349. The reversal of 40144242340 is 4324244104.

It is a super-2 number, since 2×40144242340² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40144242299 and 40144242308.

It is not an unprimeable number, because it can be changed into a prime (40144242349) 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, 14927716 + ... + 14930404.

It is an arithmetic number, because the mean of its divisors is an integer number (979536600).

Almost surely, 2^40144242340 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 40144242340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47017756800).

40144242340 is an abundant number, since it is smaller than the sum of its proper divisors (53891271260).

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

40144242340 is a wasteful number, since it uses less digits than its factorization.

40144242340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5045 (or 5043 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 40144242340 its reverse (4324244104), we get a palindrome (44468486444).

The spelling of 40144242340 in words is "forty billion, one hundred forty-four million, two hundred forty-two thousand, three hundred forty".