1141405 has 4 divisors (see below), whose sum is σ = 1369692. Its totient is φ = 913120.

The previous prime is 1141391. The next prime is 1141417. The reversal of 1141405 is 5041411.

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

It can be written as a sum of positive squares in 2 ways, for example, as 356409 + 784996 = 597^2 + 886^2 .

It is not a de Polignac number, because 1141405 - 2⁵ = 1141373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 114136 + ... + 114145.

It is an arithmetic number, because the mean of its divisors is an integer number (342423).

2^1141405 is an apocalyptic number.

It is an amenable number.

1141405 is a deficient number, since it is larger than the sum of its proper divisors (228287).

1141405 is an equidigital number, since it uses as much as digits as its factorization.

1141405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228286.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1141405 is about 1068.3655741365. The cubic root of 1141405 is about 104.5072909910.

Adding to 1141405 its reverse (5041411), we get a palindrome (6182816).

The spelling of 1141405 in words is "one million, one hundred forty-one thousand, four hundred five".