40140430440 has 128 divisors (see below), whose sum is σ = 131746608000. Its totient is φ = 9703019520.

The previous prime is 40140430433. The next prime is 40140430513. The reversal of 40140430440 is 4403404104.

It is a super-2 number, since 2×40140430440² (a number of 22 digits) contains 22 as substring.

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 40140430440.

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, 417114 + ... + 504246.

It is an arithmetic number, because the mean of its divisors is an integer number (1029270375).

Almost surely, 2^40140430440 is an apocalyptic number.

40140430440 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 40140430440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65873304000).

40140430440 is an abundant number, since it is smaller than the sum of its proper divisors (91606177560).

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

40140430440 is a wasteful number, since it uses less digits than its factorization.

40140430440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87507 (or 87503 counting only the distinct ones).

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

Adding to 40140430440 its reverse (4403404104), we get a palindrome (44543834544).

The spelling of 40140430440 in words is "forty billion, one hundred forty million, four hundred thirty thousand, four hundred forty".