43140120240040 has 16 divisors (see below), whose sum is σ = 97065270540180. Its totient is φ = 17256048096000.

The previous prime is 43140120240011. The next prime is 43140120240137. The reversal of 43140120240040 is 4004202104134.

It can be written as a sum of positive squares in 2 ways, for example, as 41551870013476 + 1588250226564 = 6446074^2 + 1260258^2 .

It is a super-2 number, since 2×43140120240040² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43140120239987 and 43140120240014.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539251502961 + ... + 539251503040.

Almost surely, 2^{43140120240040} is an apocalyptic number.

43140120240040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43140120240040 is an abundant number, since it is smaller than the sum of its proper divisors (53925150300140).

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

43140120240040 is a wasteful number, since it uses less digits than its factorization.

43140120240040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078503006012 (or 1078503006008 counting only the distinct ones).

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

Adding to 43140120240040 its reverse (4004202104134), we get a palindrome (47144322344174).

The spelling of 43140120240040 in words is "forty-three trillion, one hundred forty billion, one hundred twenty million, two hundred forty thousand, forty".