2105974042 has 16 divisors (see below), whose sum is σ = 3345717312. Its totient is φ = 990769600.

The previous prime is 2105974033. The next prime is 2105974099. The reversal of 2105974042 is 2404795012.

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 = 2105973989 and 2105974007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165603 + ... + 177865.

It is an arithmetic number, because the mean of its divisors is an integer number (209107332).

Almost surely, 2^2105974042 is an apocalyptic number.

2105974042 is a deficient number, since it is larger than the sum of its proper divisors (1239743270).

2105974042 is a wasteful number, since it uses less digits than its factorization.

2105974042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17333.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 2105974042 is about 45890.8928002060. The cubic root of 2105974042 is about 1281.7923381214.

The spelling of 2105974042 in words is "two billion, one hundred five million, nine hundred seventy-four thousand, forty-two".