1143900 has 108 divisors (see below), whose sum is σ = 3791424. Its totient is φ = 288000.

The previous prime is 1143893. The next prime is 1143943. The reversal of 1143900 is 93411.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 27880 + ... + 27920.

2^1143900 is an apocalyptic number.

1143900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1895712).

1143900 is an abundant number, since it is smaller than the sum of its proper divisors (2647524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143900 is a wasteful number, since it uses less digits than its factorization.

1143900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1143900 is about 1069.5326081986. The cubic root of 1143900 is about 104.5833831562.

The spelling of 1143900 in words is "one million, one hundred forty-three thousand, nine hundred".