7127945 has 24 divisors (see below), whose sum is σ = 9875520. Its totient is φ = 4897440.

The previous prime is 7127899. The next prime is 7127963. The reversal of 7127945 is 5497217.

7127945 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7127945 - 2⁸ = 7127689 is a prime.

It is a super-3 number, since 3×7127945³ (a number of 22 digits) contains 333 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19676 + ... + 20034.

It is an arithmetic number, because the mean of its divisors is an integer number (411480).

Almost surely, 2^7127945 is an apocalyptic number.

It is an amenable number.

7127945 is a deficient number, since it is larger than the sum of its proper divisors (2747575).

7127945 is a wasteful number, since it uses less digits than its factorization.

7127945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 394 counting only the distinct ones).

The product of its digits is 17640, while the sum is 35.

The square root of 7127945 is about 2669.8211550589. The cubic root of 7127945 is about 192.4515648086.

The spelling of 7127945 in words is "seven million, one hundred twenty-seven thousand, nine hundred forty-five".