1426666 has 8 divisors (see below), whose sum is σ = 2147040. Its totient is φ = 710988.

The previous prime is 1426643. The next prime is 1426669. The reversal of 1426666 is 6666241.

It is a sphenic number, since it is the product of 3 distinct primes.

1426666 is a modest number, since divided by 6666 gives 142 as remainder.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (1426669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276 + ... + 1711.

It is an arithmetic number, because the mean of its divisors is an integer number (268380).

2^1426666 is an apocalyptic number.

1426666 is a deficient number, since it is larger than the sum of its proper divisors (720374).

1426666 is a wasteful number, since it uses less digits than its factorization.

1426666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348.

The product of its digits is 10368, while the sum is 31.

The square root of 1426666 is about 1194.4312454051. The cubic root of 1426666 is about 112.5746927846.

The spelling of 1426666 in words is "one million, four hundred twenty-six thousand, six hundred sixty-six".