1320426 has 24 divisors (see below), whose sum is σ = 2891460. Its totient is φ = 435456.

The previous prime is 1320421. The next prime is 1320427. The reversal of 1320426 is 6240231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1320201 + 225 = 1149^2 + 15^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1320399 and 1320408.

It is not an unprimeable number, because it can be changed into a prime (1320421) 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, 1626 + ... + 2298.

2^1320426 is an apocalyptic number.

1320426 is an abundant number, since it is smaller than the sum of its proper divisors (1571034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1320426 is a wasteful number, since it uses less digits than its factorization.

1320426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1320426 is about 1149.0979070558. The cubic root of 1320426 is about 109.7079304238.

Adding to 1320426 its reverse (6240231), we get a palindrome (7560657).

The spelling of 1320426 in words is "one million, three hundred twenty thousand, four hundred twenty-six".