6440562403242 has 32 divisors (see below), whose sum is σ = 14052353943744. Its totient is φ = 1951655328000.

The previous prime is 6440562403183. The next prime is 6440562403273. The reversal of 6440562403242 is 2423042650446.

It is a super-2 number, since 2×6440562403242² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6440562403194 and 6440562403203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3734992 + ... + 5179892.

It is an arithmetic number, because the mean of its divisors is an integer number (439136060742).

Almost surely, 2^{6440562403242} is an apocalyptic number.

6440562403242 is an abundant number, since it is smaller than the sum of its proper divisors (7611791540502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6440562403242 is a wasteful number, since it uses less digits than its factorization.

6440562403242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512454.

The product of its (nonzero) digits is 1105920, while the sum is 42.

The spelling of 6440562403242 in words is "six trillion, four hundred forty billion, five hundred sixty-two million, four hundred three thousand, two hundred forty-two".