7121115 has 24 divisors (see below), whose sum is σ = 12802608. Its totient is φ = 3797280.

The previous prime is 7121089. The next prime is 7121137. The reversal of 7121115 is 5111217.

It is a happy number.

It is not a de Polignac number, because 7121115 - 2⁷ = 7120987 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1716 + ... + 4145.

It is an arithmetic number, because the mean of its divisors is an integer number (533442).

Almost surely, 2^7121115 is an apocalyptic number.

7121115 is a deficient number, since it is larger than the sum of its proper divisors (5681493).

7121115 is an equidigital number, since it uses as much as digits as its factorization.

7121115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5881 (or 5869 counting only the distinct ones).

The product of its digits is 70, while the sum is 18.

The square root of 7121115 is about 2668.5417366045. The cubic root of 7121115 is about 192.3900761072.

The spelling of 7121115 in words is "seven million, one hundred twenty-one thousand, one hundred fifteen".