7042289 has 4 divisors (see below), whose sum is σ = 7063524. Its totient is φ = 7021056.

The previous prime is 7042271. The next prime is 7042291. The reversal of 7042289 is 9822407.

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 3010225 + 4032064 = 1735^2 + 2008^2 .

It is a cyclic number.

It is not a de Polignac number, because 7042289 - 2⁸ = 7042033 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7042219) 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, 10112 + ... + 10785.

It is an arithmetic number, because the mean of its divisors is an integer number (1765881).

Almost surely, 2^7042289 is an apocalyptic number.

It is an amenable number.

7042289 is a deficient number, since it is larger than the sum of its proper divisors (21235).

7042289 is a wasteful number, since it uses less digits than its factorization.

7042289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21234.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 7042289 is about 2653.7311468949. The cubic root of 7042289 is about 191.6775639257.

The spelling of 7042289 in words is "seven million, forty-two thousand, two hundred eighty-nine".