1066426 has 4 divisors (see below), whose sum is σ = 1599642. Its totient is φ = 533212.

The previous prime is 1066423. The next prime is 1066433. The reversal of 1066426 is 6246601.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 724201 + 342225 = 851^2 + 585^2 .

It is a super-2 number, since 2×1066426² = 2274528826952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1066426.

It is not an unprimeable number, because it can be changed into a prime (1066423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266605 + ... + 266608.

2^1066426 is an apocalyptic number.

1066426 is a deficient number, since it is larger than the sum of its proper divisors (533216).

1066426 is an equidigital number, since it uses as much as digits as its factorization.

1066426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533215.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1066426 is about 1032.6790401669. The cubic root of 1066426 is about 102.1669060271.

The spelling of 1066426 in words is "one million, sixty-six thousand, four hundred twenty-six".