40140134440 has 64 divisors (see below), whose sum is σ = 104005503360. Its totient is φ = 13657263360.

The previous prime is 40140134423. The next prime is 40140134449. The reversal of 40140134440 is 4443104104.

It is a happy number.

It is a super-2 number, since 2×40140134440² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40140134449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510487 + ... + 583846.

It is an arithmetic number, because the mean of its divisors is an integer number (1625085990).

Almost surely, 2^40140134440 is an apocalyptic number.

40140134440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40140134440 is an abundant number, since it is smaller than the sum of its proper divisors (63865368920).

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

40140134440 is a wasteful number, since it uses less digits than its factorization.

40140134440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094482 (or 1094478 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 40140134440 its reverse (4443104104), we get a palindrome (44583238544).

The spelling of 40140134440 in words is "forty billion, one hundred forty million, one hundred thirty-four thousand, four hundred forty".