1285727 has 8 divisors (see below), whose sum is σ = 1388016. Its totient is φ = 1186432.

The previous prime is 1285717. The next prime is 1285741. The reversal of 1285727 is 7275821.

1285727 = 129² + 130² + ... + 181².

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

It is a cyclic number.

It is not a de Polignac number, because 1285727 - 2¹⁴ = 1269343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1285693 and 1285702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285717) 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, 188 + ... + 1614.

It is an arithmetic number, because the mean of its divisors is an integer number (173502).

2^1285727 is an apocalyptic number.

1285727 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1285727 is a deficient number, since it is larger than the sum of its proper divisors (102289).

1285727 is a wasteful number, since it uses less digits than its factorization.

1285727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497.

The product of its digits is 7840, while the sum is 32.

The square root of 1285727 is about 1133.8990254868. The cubic root of 1285727 is about 108.7383957319.

The spelling of 1285727 in words is "one million, two hundred eighty-five thousand, seven hundred twenty-seven".