1225743 has 16 divisors (see below), whose sum is σ = 1722720. Its totient is φ = 774144.

The previous prime is 1225729. The next prime is 1225759. The reversal of 1225743 is 3475221.

It is not a de Polignac number, because 1225743 - 2⁴ = 1225727 is a prime.

1225743 is a lucky number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6255 + ... + 6447.

It is an arithmetic number, because the mean of its divisors is an integer number (107670).

2^1225743 is an apocalyptic number.

1225743 is a deficient number, since it is larger than the sum of its proper divisors (496977).

1225743 is a wasteful number, since it uses less digits than its factorization.

1225743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298.

The product of its digits is 1680, while the sum is 24.

The square root of 1225743 is about 1107.1327833643. The cubic root of 1225743 is about 107.0203763564.

The spelling of 1225743 in words is "one million, two hundred twenty-five thousand, seven hundred forty-three".