2309556406242 has 8 divisors (see below), whose sum is σ = 4619112812496. Its totient is φ = 769852135412.

The previous prime is 2309556406217. The next prime is 2309556406271. The reversal of 2309556406242 is 2426046559032.

It is a sphenic number, since it is the product of 3 distinct primes.

2309556406242 is an admirable number.

It is a super-2 number, since 2×2309556406242² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2309556406191 and 2309556406200.

It is an unprimeable number.

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, 192463033848 + ... + 192463033859.

It is an arithmetic number, because the mean of its divisors is an integer number (577389101562).

Almost surely, 2^{2309556406242} is an apocalyptic number.

2309556406242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2309556406242 is a wasteful number, since it uses less digits than its factorization.

2309556406242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384926067712.

The product of its (nonzero) digits is 3110400, while the sum is 48.

The spelling of 2309556406242 in words is "two trillion, three hundred nine billion, five hundred fifty-six million, four hundred six thousand, two hundred forty-two".