7121441 has 2 divisors, whose sum is σ = 7121442. Its totient is φ = 7121440.

The previous prime is 7121437. The next prime is 7121473. The reversal of 7121441 is 1441217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5740816 + 1380625 = 2396^2 + 1175^2 .

It is an emirp because it is prime and its reverse (1441217) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7121441 - 2² = 7121437 is a prime.

It is not a weakly prime, because it can be changed into another prime (7121141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3560720 + 3560721.

It is an arithmetic number, because the mean of its divisors is an integer number (3560721).

Almost surely, 2^7121441 is an apocalyptic number.

It is an amenable number.

7121441 is a deficient number, since it is larger than the sum of its proper divisors (1).

7121441 is an equidigital number, since it uses as much as digits as its factorization.

7121441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 224, while the sum is 20.

The square root of 7121441 is about 2668.6028179555. The cubic root of 7121441 is about 192.3930118932.

Subtracting from 7121441 its product of digits (224), we obtain a palindrome (7121217).

Adding to 7121441 its reverse (1441217), we get a palindrome (8562658).

It can be divided in two parts, 71 and 21441, that added together give a palindrome (21512).

The spelling of 7121441 in words is "seven million, one hundred twenty-one thousand, four hundred forty-one".