4042402440240 has 40 divisors (see below), whose sum is σ = 12531447565488. Its totient is φ = 1077973984000.

The previous prime is 4042402440233. The next prime is 4042402440317. The reversal of 4042402440240 is 420442042404.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 4042402440198 and 4042402440207.

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, 8421671511 + ... + 8421671990.

Almost surely, 2^{4042402440240} is an apocalyptic number.

4042402440240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4042402440240 is an abundant number, since it is smaller than the sum of its proper divisors (8489045125248).

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

4042402440240 is a wasteful number, since it uses less digits than its factorization.

4042402440240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16843343517 (or 16843343511 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 4042402440240 its reverse (420442042404), we get a palindrome (4462844482644).

The spelling of 4042402440240 in words is "four trillion, forty-two billion, four hundred two million, four hundred forty thousand, two hundred forty".