2105420986 has 16 divisors (see below), whose sum is σ = 3285688320. Its totient is φ = 1010726640.

The previous prime is 2105420969. The next prime is 2105421023. The reversal of 2105420986 is 6890245012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125821 + ... + 141568.

It is an arithmetic number, because the mean of its divisors is an integer number (205355520).

Almost surely, 2^2105420986 is an apocalyptic number.

2105420986 is a deficient number, since it is larger than the sum of its proper divisors (1180267334).

2105420986 is a wasteful number, since it uses less digits than its factorization.

2105420986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267549.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 2105420986 is about 45884.8666337824. The cubic root of 2105420986 is about 1281.6801232201.

Adding to 2105420986 its reverse (6890245012), we get a palindrome (8995665998).

The spelling of 2105420986 in words is "two billion, one hundred five million, four hundred twenty thousand, nine hundred eighty-six".