1213743 has 12 divisors (see below), whose sum is σ = 1676184. Its totient is φ = 781200.

The previous prime is 1213741. The next prime is 1213747. The reversal of 1213743 is 3473121.

It is not a de Polignac number, because 1213743 - 2¹ = 1213741 is a prime.

1213743 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2673 + ... + 3093.

It is an arithmetic number, because the mean of its divisors is an integer number (139682).

2^1213743 is an apocalyptic number.

1213743 is a deficient number, since it is larger than the sum of its proper divisors (462441).

1213743 is an equidigital number, since it uses as much as digits as its factorization.

1213743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 455 counting only the distinct ones).

The product of its digits is 504, while the sum is 21.

The square root of 1213743 is about 1101.7000499228. The cubic root of 1213743 is about 106.6699879608.

Adding to 1213743 its reverse (3473121), we get a palindrome (4686864).

The spelling of 1213743 in words is "one million, two hundred thirteen thousand, seven hundred forty-three".