2105405251342 has 96 divisors (see below), whose sum is σ = 3538750666752. Its totient is φ = 937448557056.

The previous prime is 2105405251333. The next prime is 2105405251351. The reversal of 2105405251342 is 2431525045012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2105405251333) and next prime (2105405251351).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 2105405251298 and 2105405251307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 483221428 + ... + 483225784.

It is an arithmetic number, because the mean of its divisors is an integer number (36861986112).

Almost surely, 2^{2105405251342} is an apocalyptic number.

2105405251342 is a deficient number, since it is larger than the sum of its proper divisors (1433345415410).

2105405251342 is a wasteful number, since it uses less digits than its factorization.

2105405251342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4802 (or 4785 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 2105405251342 in words is "two trillion, one hundred five billion, four hundred five million, two hundred fifty-one thousand, three hundred forty-two".