42721056120 has 64 divisors (see below), whose sum is σ = 128218943520. Its totient is φ = 11387323904.

The previous prime is 42721056089. The next prime is 42721056167. The reversal of 42721056120 is 2165012724.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203662 + ... + 356258.

Almost surely, 2^42721056120 is an apocalyptic number.

42721056120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42721056120 is an abundant number, since it is smaller than the sum of its proper divisors (85497887400).

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

42721056120 is a wasteful number, since it uses less digits than its factorization.

42721056120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154944 (or 154940 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

Adding to 42721056120 its reverse (2165012724), we get a palindrome (44886068844).

The spelling of 42721056120 in words is "forty-two billion, seven hundred twenty-one million, fifty-six thousand, one hundred twenty".