42009698221 has 8 divisors (see below), whose sum is σ = 42390526464. Its totient is φ = 41629945440.

The previous prime is 42009698183. The next prime is 42009698239. The reversal of 42009698221 is 12289690024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42009698221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42009693221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190285 + ... + 346738.

It is an arithmetic number, because the mean of its divisors is an integer number (5298815808).

Almost surely, 2^42009698221 is an apocalyptic number.

It is an amenable number.

42009698221 is a deficient number, since it is larger than the sum of its proper divisors (380828243).

42009698221 is a wasteful number, since it uses less digits than its factorization.

42009698221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537731.

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 42009698221 in words is "forty-two billion, nine million, six hundred ninety-eight thousand, two hundred twenty-one".