2119905 has 32 divisors (see below), whose sum is σ = 3870720. Its totient is φ = 1100160.

The previous prime is 2119879. The next prime is 2119907. The reversal of 2119905 is 5099112.

It is a happy number.

It is not a de Polignac number, because 2119905 - 2¹³ = 2111713 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2119907) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5344 + ... + 5726.

It is an arithmetic number, because the mean of its divisors is an integer number (120960).

2^2119905 is an apocalyptic number.

It is an amenable number.

2119905 is a deficient number, since it is larger than the sum of its proper divisors (1750815).

2119905 is a wasteful number, since it uses less digits than its factorization.

2119905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 2119905 is about 1455.9893543567. The cubic root of 2119905 is about 128.4612468745.

The spelling of 2119905 in words is "two million, one hundred nineteen thousand, nine hundred five".