1213426 has 16 divisors (see below), whose sum is σ = 1953720. Its totient is φ = 563200.

The previous prime is 1213379. The next prime is 1213427. The reversal of 1213426 is 6243121.

It can be written as a sum of positive squares in 4 ways, for example, as 1207801 + 5625 = 1099^2 + 75^2 .

It is not an unprimeable number, because it can be changed into a prime (1213427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2826 + ... + 3226.

2^1213426 is an apocalyptic number.

1213426 is a deficient number, since it is larger than the sum of its proper divisors (740294).

1213426 is a wasteful number, since it uses less digits than its factorization.

1213426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509.

The product of its digits is 288, while the sum is 19.

The square root of 1213426 is about 1101.5561719676. The cubic root of 1213426 is about 106.6607006212.

Adding to 1213426 its reverse (6243121), we get a palindrome (7456547).

The spelling of 1213426 in words is "one million, two hundred thirteen thousand, four hundred twenty-six".