1081427 has 4 divisors (see below), whose sum is σ = 1083600. Its totient is φ = 1079256.

The previous prime is 1081417. The next prime is 1081429. The reversal of 1081427 is 7241801.

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 1081427 - 2¹⁶ = 1015891 is a prime.

It is a d-powerful number, because it can be written as 1 + 0 + 8⁵ + 1 + 4¹⁰ + 2⁵ + 7² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74 + ... + 1472.

It is an arithmetic number, because the mean of its divisors is an integer number (270900).

2^1081427 is an apocalyptic number.

1081427 is a deficient number, since it is larger than the sum of its proper divisors (2173).

1081427 is an equidigital number, since it uses as much as digits as its factorization.

1081427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1081427 is about 1039.9168235970. The cubic root of 1081427 is about 102.6437246108.

The spelling of 1081427 in words is "one million, eighty-one thousand, four hundred twenty-seven".