1426618 has 4 divisors (see below), whose sum is σ = 2139930. Its totient is φ = 713308.

The previous prime is 1426613. The next prime is 1426619. The reversal of 1426618 is 8166241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8166241 = 197 ⋅41453.

It can be written as a sum of positive squares in only one way, i.e., 1247689 + 178929 = 1117^2 + 423^2 .

It is not an unprimeable number, because it can be changed into a prime (1426613) 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 as a sum of consecutive naturals, namely, 356653 + ... + 356656.

2^1426618 is an apocalyptic number.

1426618 is a deficient number, since it is larger than the sum of its proper divisors (713312).

1426618 is an equidigital number, since it uses as much as digits as its factorization.

1426618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713311.

The product of its digits is 2304, while the sum is 28.

The square root of 1426618 is about 1194.4111519908. The cubic root of 1426618 is about 112.5734302500.

The spelling of 1426618 in words is "one million, four hundred twenty-six thousand, six hundred eighteen".