2105290 has 16 divisors (see below), whose sum is σ = 4134240. Its totient is φ = 765520.

The previous prime is 2105287. The next prime is 2105317. The reversal of 2105290 is 925012.

It is an alternating number because its digits alternate between even and odd.

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, 9460 + ... + 9679.

It is an arithmetic number, because the mean of its divisors is an integer number (258390).

2^2105290 is an apocalyptic number.

2105290 is a deficient number, since it is larger than the sum of its proper divisors (2028950).

2105290 is a wasteful number, since it uses less digits than its factorization.

2105290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19157.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 2105290 is about 1450.9617500127. The cubic root of 2105290 is about 128.1653543321.

The spelling of 2105290 in words is "two million, one hundred five thousand, two hundred ninety".