1285427 has 16 divisors (see below), whose sum is σ = 1542240. Its totient is φ = 1056000.

The previous prime is 1285411. The next prime is 1285429. The reversal of 1285427 is 7245821.

It is not a de Polignac number, because 1285427 - 2⁴ = 1285411 is a prime.

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 1285427.

It is not an unprimeable number, because it can be changed into a prime (1285429) 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, 12677 + ... + 12777.

It is an arithmetic number, because the mean of its divisors is an integer number (96390).

2^1285427 is an apocalyptic number.

1285427 is a deficient number, since it is larger than the sum of its proper divisors (256813).

1285427 is a wasteful number, since it uses less digits than its factorization.

1285427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214.

The product of its digits is 4480, while the sum is 29.

The square root of 1285427 is about 1133.7667308578. The cubic root of 1285427 is about 108.7299377269.

It can be divided in two parts, 128 and 5427, that added together give a palindrome (5555).

The spelling of 1285427 in words is "one million, two hundred eighty-five thousand, four hundred twenty-seven".