1050905 has 8 divisors (see below), whose sum is σ = 1274184. Its totient is φ = 832000.

The previous prime is 1050901. The next prime is 1050913. The reversal of 1050905 is 5090501.

It can be written as a sum of positive squares in 4 ways, for example, as 290521 + 760384 = 539^2 + 872^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1050905 - 2² = 1050901 is a prime.

It is a super-2 number, since 2×1050905² = 2208802638050, which contains 22 as substring.

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

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1050901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536 + ... + 1545.

It is an arithmetic number, because the mean of its divisors is an integer number (159273).

2^1050905 is an apocalyptic number.

It is an amenable number.

1050905 is a deficient number, since it is larger than the sum of its proper divisors (223279).

1050905 is a wasteful number, since it uses less digits than its factorization.

1050905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187.

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 1050905 is about 1025.1365762668. The cubic root of 1050905 is about 101.6688285246.

The spelling of 1050905 in words is "one million, fifty thousand, nine hundred five".