1120381 has 4 divisors (see below), whose sum is σ = 1123200. Its totient is φ = 1117564.

The previous prime is 1120369. The next prime is 1120391. The reversal of 1120381 is 1830211.

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.

It is a cyclic number.

It is not a de Polignac number, because 1120381 - 2⁵ = 1120349 is a prime.

It is a super-2 number, since 2×1120381² = 2510507170322, which contains 22 as substring.

It is a Duffinian number.

1120381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120321) 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, 691 + ... + 1648.

It is an arithmetic number, because the mean of its divisors is an integer number (280800).

2^1120381 is an apocalyptic number.

It is an amenable number.

1120381 is a deficient number, since it is larger than the sum of its proper divisors (2819).

1120381 is an equidigital number, since it uses as much as digits as its factorization.

1120381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2818.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1120381 is about 1058.4805147002. The cubic root of 1120381 is about 103.8616565368.

Adding to 1120381 its reverse (1830211), we get a palindrome (2950592).

The spelling of 1120381 in words is "one million, one hundred twenty thousand, three hundred eighty-one".