Adding to 1142400 its reverse (42411), we get a palindrome (1184811).
It is a tau number, because it is divible by the number of its divisors (192).
It is an unprimeable number.
21142400 is an apocalyptic number.
1142400 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 1142400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2276640).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1142400 is a wasteful number, since it uses less digits than its factorization.
1142400 is an evil number, because the sum of its binary digits is even.
The square root of 1142400 is about 1068.8311372710. The cubic root of 1142400 is about 104.5376496436.
The spelling of 1142400 in words is "one million, one hundred forty-two thousand, four hundred".