6340256155242 has 128 divisors (see below), whose sum is σ = 15325071436800. Its totient is φ = 1934882546688.

The previous prime is 6340256155241. The next prime is 6340256155253. The reversal of 6340256155242 is 2425516520436.

6340256155242 is a `hidden beast` number, since 6 + 3 + 4 + 0 + 2 + 5 + 615 + 5 + 24 + 2 = 666.

It is a super-2 number, since 2×6340256155242² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6340256155241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 160741359 + ... + 160780797.

It is an arithmetic number, because the mean of its divisors is an integer number (119727120600).

Almost surely, 2^{6340256155242} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6340256155242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7662535718400).

6340256155242 is an abundant number, since it is smaller than the sum of its proper divisors (8984815281558).

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

6340256155242 is a wasteful number, since it uses less digits than its factorization.

6340256155242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44237 (or 44231 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

The spelling of 6340256155242 in words is "six trillion, three hundred forty billion, two hundred fifty-six million, one hundred fifty-five thousand, two hundred forty-two".