7123481 has 2 divisors, whose sum is σ = 7123482. Its totient is φ = 7123480.

The previous prime is 7123469. The next prime is 7123489. The reversal of 7123481 is 1843217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6864400 + 259081 = 2620^2 + 509^2 .

It is an emirp because it is prime and its reverse (1843217) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7123481 - 2¹⁰ = 7122457 is a prime.

It is a super-2 number, since 2×7123481² = 101487963114722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7123481.

It is not a weakly prime, because it can be changed into another prime (7123489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3561740 + 3561741.

It is an arithmetic number, because the mean of its divisors is an integer number (3561741).

Almost surely, 2^7123481 is an apocalyptic number.

It is an amenable number.

7123481 is a deficient number, since it is larger than the sum of its proper divisors (1).

7123481 is an equidigital number, since it uses as much as digits as its factorization.

7123481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 26.

The square root of 7123481 is about 2668.9850130714. The cubic root of 7123481 is about 192.4113810347.

Adding to 7123481 its reverse (1843217), we get a palindrome (8966698).

The spelling of 7123481 in words is "seven million, one hundred twenty-three thousand, four hundred eighty-one".