7794121 has 2 divisors, whose sum is σ = 7794122. Its totient is φ = 7794120.

The previous prime is 7794119. The next prime is 7794131. The reversal of 7794121 is 1214977.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7096896 + 697225 = 2664^2 + 835^2 .

It is an emirp because it is prime and its reverse (1214977) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7794121 - 2¹ = 7794119 is a prime.

Together with 7794119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7794131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3897060 + 3897061.

It is an arithmetic number, because the mean of its divisors is an integer number (3897061).

Almost surely, 2^7794121 is an apocalyptic number.

It is an amenable number.

7794121 is a deficient number, since it is larger than the sum of its proper divisors (1).

7794121 is an equidigital number, since it uses as much as digits as its factorization.

7794121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 31.

The square root of 7794121 is about 2791.7953005190. The cubic root of 7794121 is about 198.2694101524.

It can be divided in two parts, 779 and 4121, that added together give a square (4900 = 70²).

The spelling of 7794121 in words is "seven million, seven hundred ninety-four thousand, one hundred twenty-one".