2042440403140 has 24 divisors (see below), whose sum is σ = 4370051732760. Its totient is φ = 801561516288.

The previous prime is 2042440403123. The next prime is 2042440403147. The reversal of 2042440403140 is 413040442402.

It can be written as a sum of positive squares in 4 ways, for example, as 643746266244 + 1398694136896 = 802338^2 + 1182664^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2042440403099 and 2042440403108.

It is not an unprimeable number, because it can be changed into a prime (2042440403147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 963414225 + ... + 963416344.

It is an arithmetic number, because the mean of its divisors is an integer number (182085488865).

Almost surely, 2^{2042440403140} is an apocalyptic number.

2042440403140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2042440403140 is an abundant number, since it is smaller than the sum of its proper divisors (2327611329620).

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

2042440403140 is a wasteful number, since it uses less digits than its factorization.

2042440403140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926830631 (or 1926830629 counting only the distinct ones).

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

Adding to 2042440403140 its reverse (413040442402), we get a palindrome (2455480845542).

The spelling of 2042440403140 in words is "two trillion, forty-two billion, four hundred forty million, four hundred three thousand, one hundred forty".