7125871 has 4 divisors (see below), whose sum is σ = 7169752. Its totient is φ = 7081992.

The previous prime is 7125869. The next prime is 7125887. The reversal of 7125871 is 1785217.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7125871 - 2¹ = 7125869 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 (7125821) 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, 21696 + ... + 22021.

It is an arithmetic number, because the mean of its divisors is an integer number (1792438).

Almost surely, 2^7125871 is an apocalyptic number.

7125871 is a deficient number, since it is larger than the sum of its proper divisors (43881).

7125871 is a wasteful number, since it uses less digits than its factorization.

7125871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43880.

The product of its digits is 3920, while the sum is 31.

The square root of 7125871 is about 2669.4327112703. The cubic root of 7125871 is about 192.4328972841.

The spelling of 7125871 in words is "seven million, one hundred twenty-five thousand, eight hundred seventy-one".