43140005440 has 56 divisors (see below), whose sum is σ = 117402449472. Its totient is φ = 14790858240.

The previous prime is 43140005437. The next prime is 43140005509. The reversal of 43140005440 is 4450004134.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×43140005440² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9627226 + ... + 9631705.

It is an arithmetic number, because the mean of its divisors is an integer number (2096472312).

Almost surely, 2^43140005440 is an apocalyptic number.

43140005440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43140005440 is an abundant number, since it is smaller than the sum of its proper divisors (74262444032).

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

43140005440 is a wasteful number, since it uses less digits than its factorization.

43140005440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19258955 (or 19258945 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 43140005440 its reverse (4450004134), we get a palindrome (47590009574).

The spelling of 43140005440 in words is "forty-three billion, one hundred forty million, five thousand, four hundred forty".