7121361 has 8 divisors (see below), whose sum is σ = 10225600. Its totient is φ = 4382352.

The previous prime is 7121357. The next prime is 7121377. The reversal of 7121361 is 1631217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7121361 - 2² = 7121357 is a prime.

It is a Duffinian number.

7121361 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7121321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91261 + ... + 91338.

It is an arithmetic number, because the mean of its divisors is an integer number (1278200).

Almost surely, 2^7121361 is an apocalyptic number.

It is an amenable number.

7121361 is a deficient number, since it is larger than the sum of its proper divisors (3104239).

7121361 is a wasteful number, since it uses less digits than its factorization.

7121361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182615.

The product of its digits is 252, while the sum is 21.

The square root of 7121361 is about 2668.5878287963. The cubic root of 7121361 is about 192.3922914632.

Adding to 7121361 its reverse (1631217), we get a palindrome (8752578).

The spelling of 7121361 in words is "seven million, one hundred twenty-one thousand, three hundred sixty-one".