1240041552421 has 8 divisors (see below), whose sum is σ = 1417303127360. Its totient is φ = 1062808172928.

The previous prime is 1240041552403. The next prime is 1240041552437. The reversal of 1240041552421 is 1242551400421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1240041552421 - 2²⁹ = 1239504681509 is a prime.

It is a super-2 number, since 2×1240041552421² (a number of 25 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 (1240041552401) 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, 6954531 + ... + 7130608.

It is an arithmetic number, because the mean of its divisors is an integer number (177162890920).

Almost surely, 2^{1240041552421} is an apocalyptic number.

It is an amenable number.

1240041552421 is a deficient number, since it is larger than the sum of its proper divisors (177261574939).

1240041552421 is a wasteful number, since it uses less digits than its factorization.

1240041552421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14097723.

The product of its (nonzero) digits is 12800, while the sum is 31.

Adding to 1240041552421 its reverse (1242551400421), we get a palindrome (2482592952842).

The spelling of 1240041552421 in words is "one trillion, two hundred forty billion, forty-one million, five hundred fifty-two thousand, four hundred twenty-one".