2685352140242 has 18 divisors (see below), whose sum is σ = 4105650504837. Its totient is φ = 1317282304936.

The previous prime is 2685352140221. The next prime is 2685352140277. The reversal of 2685352140242 is 2420412535862.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2547212808001 + 138139332241 = 1595999^2 + 371671^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1158739.

It is a super-3 number, since 3×2685352140242³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2685352140193 and 2685352140202.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 122815403 + ... + 122837265.

Almost surely, 2^{2685352140242} is an apocalyptic number.

2685352140242 is a deficient number, since it is larger than the sum of its proper divisors (1420298364595).

2685352140242 is an frugal number, since it uses more digits than its factorization.

2685352140242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43834 (or 21918 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 44.

The spelling of 2685352140242 in words is "two trillion, six hundred eighty-five billion, three hundred fifty-two million, one hundred forty thousand, two hundred forty-two".