1240404042401 has 8 divisors (see below), whose sum is σ = 1242849249600. Its totient is φ = 1237961064528.

The previous prime is 1240404042247. The next prime is 1240404042463. The reversal of 1240404042401 is 1042404040421.

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 1240404042401 - 2¹⁰ = 1240404041377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240404042601) 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 7 ways as a sum of consecutive naturals, for example, 558770 + ... + 1671236.

It is an arithmetic number, because the mean of its divisors is an integer number (155356156200).

Almost surely, 2^{1240404042401} is an apocalyptic number.

It is an amenable number.

1240404042401 is a deficient number, since it is larger than the sum of its proper divisors (2445207199).

1240404042401 is a wasteful number, since it uses less digits than its factorization.

1240404042401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114663.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 1240404042401 its reverse (1042404040421), we get a palindrome (2282808082822).

The spelling of 1240404042401 in words is "one trillion, two hundred forty billion, four hundred four million, forty-two thousand, four hundred one".