7241042440421 has 4 divisors (see below), whose sum is σ = 7241235382092. Its totient is φ = 7240849498752.

The previous prime is 7241042440403. The next prime is 7241042440453. The reversal of 7241042440421 is 1240442401427.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1295296648321 + 5945745792100 = 1138111^2 + 2438390^2 .

It is a cyclic number.

It is not a de Polignac number, because 7241042440421 - 2¹⁴ = 7241042424037 is a prime.

It is a super-2 number, since 2×7241042440421² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7241042440481) 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, 96414530 + ... + 96489603.

It is an arithmetic number, because the mean of its divisors is an integer number (1810308845523).

Almost surely, 2^{7241042440421} is an apocalyptic number.

It is an amenable number.

7241042440421 is a deficient number, since it is larger than the sum of its proper divisors (192941671).

7241042440421 is a wasteful number, since it uses less digits than its factorization.

7241042440421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192941670.

The product of its (nonzero) digits is 57344, while the sum is 35.

Adding to 7241042440421 its reverse (1240442401427), we get a palindrome (8481484841848).

The spelling of 7241042440421 in words is "seven trillion, two hundred forty-one billion, forty-two million, four hundred forty thousand, four hundred twenty-one".