1285452 has 36 divisors (see below), whose sum is σ = 3714256. Its totient is φ = 367200.

The previous prime is 1285451. The next prime is 1285469. The reversal of 1285452 is 2545821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1285451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2299 + ... + 2802.

2^1285452 is an apocalyptic number.

1285452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1285452 is an abundant number, since it is smaller than the sum of its proper divisors (2428804).

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

1285452 is a wasteful number, since it uses less digits than its factorization.

1285452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5118 (or 5113 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 1285452 is about 1133.7777559998. Note that the first 4 decimals coincide. The cubic root of 1285452 is about 108.7306426109.

The spelling of 1285452 in words is "one million, two hundred eighty-five thousand, four hundred fifty-two".