42006221760 has 56 divisors (see below), whose sum is σ = 133369757136. Its totient is φ = 11201658880.

The previous prime is 42006221669. The next prime is 42006221779. The reversal of 42006221760 is 6712260024.

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 7 ways as a sum of consecutive naturals, for example, 21877281 + ... + 21879200.

It is an arithmetic number, because the mean of its divisors is an integer number (2381602806).

Almost surely, 2^42006221760 is an apocalyptic number.

42006221760 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42006221760 is an abundant number, since it is smaller than the sum of its proper divisors (91363535376).

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

42006221760 is a wasteful number, since it uses less digits than its factorization.

42006221760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43756501 (or 43756491 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

Adding to 42006221760 its reverse (6712260024), we get a palindrome (48718481784).

The spelling of 42006221760 in words is "forty-two billion, six million, two hundred twenty-one thousand, seven hundred sixty".