7042345 has 8 divisors (see below), whose sum is σ = 8466120. Its totient is φ = 5623680.

The previous prime is 7042337. The next prime is 7042349. The reversal of 7042345 is 5432407.

It can be written as a sum of positive squares in 4 ways, for example, as 183184 + 6859161 = 428^2 + 2619^2 .

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

It is not a de Polignac number, because 7042345 - 2³ = 7042337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7042349) 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 7 ways as a sum of consecutive naturals, for example, 3175 + ... + 4915.

It is an arithmetic number, because the mean of its divisors is an integer number (1058265).

Almost surely, 2^7042345 is an apocalyptic number.

It is an amenable number.

7042345 is a deficient number, since it is larger than the sum of its proper divisors (1423775).

7042345 is a wasteful number, since it uses less digits than its factorization.

7042345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 7042345 is about 2653.7416980558. The cubic root of 7042345 is about 191.6780719951.

The spelling of 7042345 in words is "seven million, forty-two thousand, three hundred forty-five".