7427971 has 4 divisors (see below), whose sum is σ = 7450744. Its totient is φ = 7405200.

The previous prime is 7427957. The next prime is 7427977. The reversal of 7427971 is 1797247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1797247 = 103 ⋅17449.

It is a cyclic number.

It is not a de Polignac number, because 7427971 - 2⁵ = 7427939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7427971.

It is not an unprimeable number, because it can be changed into a prime (7427977) 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, 10890 + ... + 11551.

It is an arithmetic number, because the mean of its divisors is an integer number (1862686).

Almost surely, 2^7427971 is an apocalyptic number.

7427971 is a deficient number, since it is larger than the sum of its proper divisors (22773).

7427971 is a wasteful number, since it uses less digits than its factorization.

7427971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22772.

The product of its digits is 24696, while the sum is 37.

The square root of 7427971 is about 2725.4304247219. The cubic root of 7427971 is about 195.1147341450.

The spelling of 7427971 in words is "seven million, four hundred twenty-seven thousand, nine hundred seventy-one".