1012505 has 16 divisors (see below), whose sum is σ = 1347024. Its totient is φ = 725760.

The previous prime is 1012489. The next prime is 1012507. The reversal of 1012505 is 5052101.

It can be written as a sum of positive squares in 8 ways, for example, as 151321 + 861184 = 389^2 + 928^2 .

It is not a de Polignac number, because 1012505 - 2⁴ = 1012489 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1012505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012507) 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, 2195 + ... + 2615.

It is an arithmetic number, because the mean of its divisors is an integer number (84189).

2^1012505 is an apocalyptic number.

It is an amenable number.

1012505 is a deficient number, since it is larger than the sum of its proper divisors (334519).

1012505 is a wasteful number, since it uses less digits than its factorization.

1012505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 1012505 is about 1006.2330743918. The cubic root of 1012505 is about 100.4151078041.

Adding to 1012505 its reverse (5052101), we get a palindrome (6064606).

The spelling of 1012505 in words is "one million, twelve thousand, five hundred five".