1285241 has 4 divisors (see below), whose sum is σ = 1295184. Its totient is φ = 1275300.

The previous prime is 1285237. The next prime is 1285247. The reversal of 1285241 is 1425821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1285241 - 2² = 1285237 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1285247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4775 + ... + 5036.

It is an arithmetic number, because the mean of its divisors is an integer number (323796).

2^1285241 is an apocalyptic number.

It is an amenable number.

1285241 is a deficient number, since it is larger than the sum of its proper divisors (9943).

1285241 is an equidigital number, since it uses as much as digits as its factorization.

1285241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9942.

The product of its digits is 640, while the sum is 23.

The square root of 1285241 is about 1133.6847004348. The cubic root of 1285241 is about 108.7246931029.

The spelling of 1285241 in words is "one million, two hundred eighty-five thousand, two hundred forty-one".