It is an unprimeable number.
Almost surely, 21400434120 is an apocalyptic number.
1400434120 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 1400434120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1650663360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1400434120 is a wasteful number, since it uses less digits than its factorization.
1400434120 is an odious number, because the sum of its binary digits is odd.
The square root of 1400434120 is about 37422.3745906109. The cubic root of 1400434120 is about 1118.8045599516.
Adding to 1400434120 its reverse (214340041), we get a palindrome (1614774161).
The spelling of 1400434120 in words is "one billion, four hundred million, four hundred thirty-four thousand, one hundred twenty".