4197942397440 has 480 divisors, whose sum is σ = 16061191660800. Its totient is φ = 1004796149760.

The previous prime is 4197942397427. The next prime is 4197942397457. The reversal of 4197942397440 is 447932497914.

4197942397440 is a `hidden beast` number, since 4 + 19 + 7 + 94 + 2 + 3 + 97 + 440 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19916926 + ... + 20126594.

It is an arithmetic number, because the mean of its divisors is an integer number (33460815960).

Almost surely, 2^{4197942397440} is an apocalyptic number.

4197942397440 is a gapful number since it is divisible by the number (40) 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 4197942397440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8030595830400).

4197942397440 is an abundant number, since it is smaller than the sum of its proper divisors (11863249263360).

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

4197942397440 is a wasteful number, since it uses less digits than its factorization.

4197942397440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209788 (or 209769 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 63.

The spelling of 4197942397440 in words is "four trillion, one hundred ninety-seven billion, nine hundred forty-two million, three hundred ninety-seven thousand, four hundred forty".