4042240021240 has 16 divisors (see below), whose sum is σ = 9095040047880. Its totient is φ = 1616896008480.

The previous prime is 4042240021217. The next prime is 4042240021241. The reversal of 4042240021240 is 421200422404.

It is a super-2 number, since 2×4042240021240² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042240021241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50528000226 + ... + 50528000305.

Almost surely, 2^{4042240021240} is an apocalyptic number.

4042240021240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4042240021240 is an abundant number, since it is smaller than the sum of its proper divisors (5052800026640).

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

4042240021240 is a wasteful number, since it uses less digits than its factorization.

4042240021240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101056000542 (or 101056000538 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 4042240021240 its reverse (421200422404), we get a palindrome (4463440443644).

The spelling of 4042240021240 in words is "four trillion, forty-two billion, two hundred forty million, twenty-one thousand, two hundred forty".