Adding to 101204640 its reverse (46402101), we get a palindrome (147606741).
101204640 is a `hidden beast` number, since 1 + 0 + 1 + 20 + 4 + 640 = 666.
It is a tau number, because it is divible by the number of its divisors (288).
It is a congruent number.
Almost surely, 2101204640 is an apocalyptic number.
101204640 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 101204640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189876960).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
101204640 is a wasteful number, since it uses less digits than its factorization.
101204640 is an odious number, because the sum of its binary digits is odd.
The square root of 101204640 is about 10060.0516897280. The cubic root of 101204640 is about 466.0152634885.
The spelling of 101204640 in words is "one hundred one million, two hundred four thousand, six hundred forty".