1240440421333 has 16 divisors (see below), whose sum is σ = 1247060445120. Its totient is φ = 1233841593600.

The previous prime is 1240440421327. The next prime is 1240440421403. The reversal of 1240440421333 is 3331240440421.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240440421333 is a prime.

It is a super-2 number, since 2×1240440421333² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240440421295 and 1240440421304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240440421133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314272266 + ... + 314276212.

It is an arithmetic number, because the mean of its divisors is an integer number (77941277820).

Almost surely, 2^{1240440421333} is an apocalyptic number.

It is an amenable number.

1240440421333 is a deficient number, since it is larger than the sum of its proper divisors (6620023787).

1240440421333 is a wasteful number, since it uses less digits than its factorization.

1240440421333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6228.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 1240440421333 its reverse (3331240440421), we get a palindrome (4571680861754).

The spelling of 1240440421333 in words is "one trillion, two hundred forty billion, four hundred forty million, four hundred twenty-one thousand, three hundred thirty-three".