1426091 has 4 divisors (see below), whose sum is σ = 1464672. Its totient is φ = 1387512.

The previous prime is 1426081. The next prime is 1426097. The reversal of 1426091 is 1906241.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1426091 - 2¹⁸ = 1163947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1426097) 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, 19235 + ... + 19308.

It is an arithmetic number, because the mean of its divisors is an integer number (366168).

2^1426091 is an apocalyptic number.

1426091 is a deficient number, since it is larger than the sum of its proper divisors (38581).

1426091 is an equidigital number, since it uses as much as digits as its factorization.

1426091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38580.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1426091 is about 1194.1905208132. The cubic root of 1426091 is about 112.5595668087.

The spelling of 1426091 in words is "one million, four hundred twenty-six thousand, ninety-one".