1027381 has 4 divisors (see below), whose sum is σ = 1029600. Its totient is φ = 1025164.

The previous prime is 1027357. The next prime is 1027391. The reversal of 1027381 is 1837201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1837201 = 59 ⋅31139.

It is a cyclic number.

It is not a de Polignac number, because 1027381 - 2¹¹ = 1025333 is a prime.

It is a super-2 number, since 2×1027381² = 2111023438322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1027321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121 + ... + 1438.

It is an arithmetic number, because the mean of its divisors is an integer number (257400).

2^1027381 is an apocalyptic number.

It is an amenable number.

1027381 is a deficient number, since it is larger than the sum of its proper divisors (2219).

1027381 is an equidigital number, since it uses as much as digits as its factorization.

1027381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 1027381 is about 1013.5980465648. The cubic root of 1027381 is about 100.9044942359.

The spelling of 1027381 in words is "one million, twenty-seven thousand, three hundred eighty-one".