210242244505140 has 72 divisors (see below), whose sum is σ = 637736489681928. Its totient is φ = 56064450723840.

The previous prime is 210242244505133. The next prime is 210242244505207. The reversal of 210242244505140 is 41505442242012.

210242244505140 is a `hidden beast` number, since 2 + 1 + 0 + 2 + 4 + 2 + 2 + 4 + 4 + 505 + 140 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12656546220816 + 197585698284324 = 3557604^2 + 14056518^2 .

It is a super-3 number, since 3×210242244505140³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 210242244505095 and 210242244505104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78429204 + ... + 81065556.

Almost surely, 2^{210242244505140} is an apocalyptic number.

210242244505140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210242244505140 is an abundant number, since it is smaller than the sum of its proper divisors (427494245176788).

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

210242244505140 is a wasteful number, since it uses less digits than its factorization.

210242244505140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3079409 (or 3079404 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 36.

Adding to 210242244505140 its reverse (41505442242012), we get a palindrome (251747686747152).

The spelling of 210242244505140 in words is "two hundred ten trillion, two hundred forty-two billion, two hundred forty-four million, five hundred five thousand, one hundred forty".