7961121 has 24 divisors (see below), whose sum is σ = 13276224. Its totient is φ = 4502880.

The previous prime is 7961119. The next prime is 7961131. The reversal of 7961121 is 1211697.

7961121 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7961121 - 2¹ = 7961119 is a prime.

7961121 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (7961101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6151 + ... + 7331.

It is an arithmetic number, because the mean of its divisors is an integer number (553176).

Almost surely, 2^7961121 is an apocalyptic number.

It is an amenable number.

7961121 is a deficient number, since it is larger than the sum of its proper divisors (5315103).

7961121 is a wasteful number, since it uses less digits than its factorization.

7961121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301 (or 1298 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The square root of 7961121 is about 2821.5458528970. The cubic root of 7961121 is about 199.6754820587.

The spelling of 7961121 in words is "seven million, nine hundred sixty-one thousand, one hundred twenty-one".