1143955 has 8 divisors (see below), whose sum is σ = 1386000. Its totient is φ = 906336.

The previous prime is 1143953. The next prime is 1143959. The reversal of 1143955 is 5593411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1143955 - 2¹ = 1143953 is a prime.

1143955 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1143953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505 + ... + 1594.

It is an arithmetic number, because the mean of its divisors is an integer number (173250).

2^1143955 is an apocalyptic number.

1143955 is a deficient number, since it is larger than the sum of its proper divisors (242045).

1143955 is a wasteful number, since it uses less digits than its factorization.

1143955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213.

The product of its digits is 2700, while the sum is 28.

The square root of 1143955 is about 1069.5583200555. The cubic root of 1143955 is about 104.5850592916.

The spelling of 1143955 in words is "one million, one hundred forty-three thousand, nine hundred fifty-five".