7456121 has 2 divisors, whose sum is σ = 7456122. Its totient is φ = 7456120.

The previous prime is 7456063. The next prime is 7456159. The reversal of 7456121 is 1216547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4687225 + 2768896 = 2165^2 + 1664^2 .

It is an emirp because it is prime and its reverse (1216547) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7456121 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (7456171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3728060 + 3728061.

It is an arithmetic number, because the mean of its divisors is an integer number (3728061).

Almost surely, 2^7456121 is an apocalyptic number.

It is an amenable number.

7456121 is a deficient number, since it is larger than the sum of its proper divisors (1).

7456121 is an equidigital number, since it uses as much as digits as its factorization.

7456121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 26.

The square root of 7456121 is about 2730.5898630149. The cubic root of 7456121 is about 195.3609007855.

The spelling of 7456121 in words is "seven million, four hundred fifty-six thousand, one hundred twenty-one".