7142845 has 8 divisors (see below), whose sum is σ = 8867160. Its totient is φ = 5517120.

The previous prime is 7142833. The next prime is 7142851. The reversal of 7142845 is 5482417.

It can be written as a sum of positive squares in 4 ways, for example, as 367236 + 6775609 = 606^2 + 2603^2 .

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

It is not a de Polignac number, because 7142845 - 2¹¹ = 7140797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24486 + ... + 24775.

It is an arithmetic number, because the mean of its divisors is an integer number (1108395).

Almost surely, 2^7142845 is an apocalyptic number.

It is an amenable number.

7142845 is a deficient number, since it is larger than the sum of its proper divisors (1724315).

7142845 is a wasteful number, since it uses less digits than its factorization.

7142845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49295.

The product of its digits is 8960, while the sum is 31.

The square root of 7142845 is about 2672.6101474027. The cubic root of 7142845 is about 192.5855694235.

The spelling of 7142845 in words is "seven million, one hundred forty-two thousand, eight hundred forty-five".