1228741 has 2 divisors, whose sum is σ = 1228742. Its totient is φ = 1228740.

The previous prime is 1228693. The next prime is 1228763. The reversal of 1228741 is 1478221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 801025 + 427716 = 895^2 + 654^2 .

It is a cyclic number.

It is not a de Polignac number, because 1228741 - 2⁷ = 1228613 is a prime.

1228741 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228441) 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, 614370 + 614371.

It is an arithmetic number, because the mean of its divisors is an integer number (614371).

2^1228741 is an apocalyptic number.

It is an amenable number.

1228741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228741 is an equidigital number, since it uses as much as digits as its factorization.

1228741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 896, while the sum is 25.

The square root of 1228741 is about 1108.4859042857. The cubic root of 1228741 is about 107.1075577260.

The spelling of 1228741 in words is "one million, two hundred twenty-eight thousand, seven hundred forty-one".