1240041330421 has 4 divisors (see below), whose sum is σ = 1257506701344. Its totient is φ = 1222575959500.

The previous prime is 1240041330413. The next prime is 1240041330431. The reversal of 1240041330421 is 1240331400421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1240041330421 - 2³ = 1240041330413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240041330431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8732685355 + ... + 8732685496.

It is an arithmetic number, because the mean of its divisors is an integer number (314376675336).

Almost surely, 2^{1240041330421} is an apocalyptic number.

It is an amenable number.

1240041330421 is a deficient number, since it is larger than the sum of its proper divisors (17465370923).

1240041330421 is an equidigital number, since it uses as much as digits as its factorization.

1240041330421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17465370922.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1240041330421 its reverse (1240331400421), we get a palindrome (2480372730842).

The spelling of 1240041330421 in words is "one trillion, two hundred forty billion, forty-one million, three hundred thirty thousand, four hundred twenty-one".