7242085 has 8 divisors (see below), whose sum is σ = 9201816. Its totient is φ = 5452800.

The previous prime is 7242077. The next prime is 7242091. The reversal of 7242085 is 5802427.

It can be written as a sum of positive squares in 4 ways, for example, as 1855044 + 5387041 = 1362^2 + 2321^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7242085 - 2³ = 7242077 is a prime.

It is an Ulam number.

It is a Duffinian number.

7242085 is a lucky number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 42516 + ... + 42685.

It is an arithmetic number, because the mean of its divisors is an integer number (1150227).

Almost surely, 2^7242085 is an apocalyptic number.

It is an amenable number.

7242085 is a deficient number, since it is larger than the sum of its proper divisors (1959731).

7242085 is a wasteful number, since it uses less digits than its factorization.

7242085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85223.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 7242085 is about 2691.1122235983. The cubic root of 7242085 is about 193.4733742273.

It can be divided in two parts, 724 and 2085, that added together give a square (2809 = 53²).

The spelling of 7242085 in words is "seven million, two hundred forty-two thousand, eighty-five".