4021331020240 has 40 divisors (see below), whose sum is σ = 9349746932808. Its totient is φ = 1608506204160.

The previous prime is 4021331020237. The next prime is 4021331020249. The reversal of 4021331020240 is 420201331204.

It can be written as a sum of positive squares in 4 ways, for example, as 18034341264 + 4003296678976 = 134292^2 + 2000824^2 .

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

It is a super-2 number, since 2×4021331020240² (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 (4021331020249) 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, 4971264 + ... + 5723296.

Almost surely, 2^{4021331020240} is an apocalyptic number.

4021331020240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4021331020240 is an abundant number, since it is smaller than the sum of its proper divisors (5328415912568).

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

4021331020240 is a wasteful number, since it uses less digits than its factorization.

4021331020240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818887 (or 818881 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 4021331020240 its reverse (420201331204), we get a palindrome (4441532351444).

The spelling of 4021331020240 in words is "four trillion, twenty-one billion, three hundred thirty-one million, twenty thousand, two hundred forty".