42163435221720 has 128 divisors (see below), whose sum is σ = 126637974936000. Its totient is φ = 11230460559360.

The previous prime is 42163435221653. The next prime is 42163435221749. The reversal of 42163435221720 is 2712253436124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 766287810 + ... + 766342830.

Almost surely, 2^{42163435221720} is an apocalyptic number.

42163435221720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42163435221720 is an abundant number, since it is smaller than the sum of its proper divisors (84474539714280).

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

42163435221720 is a wasteful number, since it uses less digits than its factorization.

42163435221720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62373 (or 62369 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 42.

Adding to 42163435221720 its reverse (2712253436124), we get a palindrome (44875688657844).

The spelling of 42163435221720 in words is "forty-two trillion, one hundred sixty-three billion, four hundred thirty-five million, two hundred twenty-one thousand, seven hundred twenty".