7142865 has 16 divisors (see below), whose sum is σ = 11798016. Its totient is φ = 3686400.

The previous prime is 7142851. The next prime is 7142869. The reversal of 7142865 is 5682417.

It is not a de Polignac number, because 7142865 - 2⁵ = 7142833 is a prime.

It is a Curzon number.

7142865 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7142869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7216 + ... + 8145.

It is an arithmetic number, because the mean of its divisors is an integer number (737376).

Almost surely, 2^7142865 is an apocalyptic number.

It is an amenable number.

7142865 is a deficient number, since it is larger than the sum of its proper divisors (4655151).

7142865 is a wasteful number, since it uses less digits than its factorization.

7142865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15400.

The product of its digits is 13440, while the sum is 33.

The square root of 7142865 is about 2672.6138890607. The cubic root of 7142865 is about 192.5857491701.

The spelling of 7142865 in words is "seven million, one hundred forty-two thousand, eight hundred sixty-five".