1045213 has 16 divisors (see below), whose sum is σ = 1206576. Its totient is φ = 898560.

The previous prime is 1045199. The next prime is 1045223. The reversal of 1045213 is 3125401.

It can be written as a sum of positive squares in 8 ways, for example, as 19044 + 1026169 = 138^2 + 1013^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1045213 is a prime.

It is a Duffinian number.

1045213 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19695 + ... + 19747.

It is an arithmetic number, because the mean of its divisors is an integer number (75411).

2^1045213 is an apocalyptic number.

1045213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1045213 is a deficient number, since it is larger than the sum of its proper divisors (161363).

1045213 is a wasteful number, since it uses less digits than its factorization.

1045213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1045213 is about 1022.3565914103. The cubic root of 1045213 is about 101.4849403753.

The spelling of 1045213 in words is "one million, forty-five thousand, two hundred thirteen".