7421285 has 4 divisors (see below), whose sum is σ = 8905548. Its totient is φ = 5937024.

The previous prime is 7421263. The next prime is 7421329. The reversal of 7421285 is 5821247.

7421285 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4761124 + 2660161 = 2182^2 + 1631^2 .

It is a cyclic number.

It is not a de Polignac number, because 7421285 - 2¹⁰ = 7420261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 742124 + ... + 742133.

It is an arithmetic number, because the mean of its divisors is an integer number (2226387).

Almost surely, 2^7421285 is an apocalyptic number.

It is an amenable number.

7421285 is a deficient number, since it is larger than the sum of its proper divisors (1484263).

7421285 is a wasteful number, since it uses less digits than its factorization.

7421285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484262.

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

The square root of 7421285 is about 2724.2035533344. The cubic root of 7421285 is about 195.0561749181.

The spelling of 7421285 in words is "seven million, four hundred twenty-one thousand, two hundred eighty-five".