1141855 has 16 divisors (see below), whose sum is σ = 1610784. Its totient is φ = 766080.

The previous prime is 1141853. The next prime is 1141867. The reversal of 1141855 is 5581411.

1141855 = T₁₅₄ + T₁₅₅ + ... + T₂₁₈.

It is a happy number.

It is not a de Polignac number, because 1141855 - 2¹ = 1141853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84 + ... + 1513.

It is an arithmetic number, because the mean of its divisors is an integer number (100674).

2^1141855 is an apocalyptic number.

1141855 is a deficient number, since it is larger than the sum of its proper divisors (468929).

1141855 is a wasteful number, since it uses less digits than its factorization.

1141855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626.

The product of its digits is 800, while the sum is 25.

The square root of 1141855 is about 1068.5761554517. The cubic root of 1141855 is about 104.5210232193.

The spelling of 1141855 in words is "one million, one hundred forty-one thousand, eight hundred fifty-five".