1335021 has 16 divisors (see below), whose sum is σ = 1858560. Its totient is φ = 851760.

The previous prime is 1335007. The next prime is 1335023. The reversal of 1335021 is 1205331.

It is a happy number.

It is not a de Polignac number, because 1335021 - 2¹¹ = 1332973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1335023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10126 + ... + 10256.

It is an arithmetic number, because the mean of its divisors is an integer number (116160).

2^1335021 is an apocalyptic number.

It is an amenable number.

1335021 is a deficient number, since it is larger than the sum of its proper divisors (523539).

1335021 is a wasteful number, since it uses less digits than its factorization.

1335021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 1335021 is about 1155.4310883822. The cubic root of 1335021 is about 110.1106599886.

The spelling of 1335021 in words is "one million, three hundred thirty-five thousand, twenty-one".