4042400042040 has 32 divisors (see below), whose sum is σ = 12127200126480. Its totient is φ = 1077973344512.

The previous prime is 4042400042027. The next prime is 4042400042059. The reversal of 4042400042040 is 402400042404.

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 4042400042040.

It is a congruent number.

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, 16843333389 + ... + 16843333628.

Almost surely, 2^{4042400042040} is an apocalyptic number.

4042400042040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4042400042040 is an abundant number, since it is smaller than the sum of its proper divisors (8084800084440).

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

4042400042040 is a wasteful number, since it uses less digits than its factorization.

4042400042040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33686667031 (or 33686667027 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 4042400042040 its reverse (402400042404), we get a palindrome (4444800084444).

The spelling of 4042400042040 in words is "four trillion, forty-two billion, four hundred million, forty-two thousand, forty".