1285170 has 16 divisors (see below), whose sum is σ = 3084480. Its totient is φ = 342704.

The previous prime is 1285169. The next prime is 1285181. The reversal of 1285170 is 715821.

It is a self number, because there is not a number n which added to its sum of digits gives 1285170.

It is a congruent number.

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, 21390 + ... + 21449.

It is an arithmetic number, because the mean of its divisors is an integer number (192780).

2^1285170 is an apocalyptic number.

1285170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1285170 is an abundant number, since it is smaller than the sum of its proper divisors (1799310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1285170 is a wasteful number, since it uses less digits than its factorization.

1285170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42849.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 1285170 is about 1133.6533861812. The cubic root of 1285170 is about 108.7226909893.

It can be divided in two parts, 12851 and 70, that added together give a palindrome (12921).

The spelling of 1285170 in words is "one million, two hundred eighty-five thousand, one hundred seventy".