42868759221 has 48 divisors (see below), whose sum is σ = 65694749120. Its totient is φ = 27927815040.

The previous prime is 42868759217. The next prime is 42868759237. The reversal of 42868759221 is 12295786824.

42868759221 is a `hidden beast` number, since 4 + 28 + 6 + 8 + 7 + 592 + 21 = 666.

It is not a de Polignac number, because 42868759221 - 2² = 42868759217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42868752221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1922466 + ... + 1944636.

Almost surely, 2^42868759221 is an apocalyptic number.

It is an amenable number.

42868759221 is a deficient number, since it is larger than the sum of its proper divisors (22825989899).

42868759221 is a wasteful number, since it uses less digits than its factorization.

42868759221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22368 (or 22356 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 42868759221 in words is "forty-two billion, eight hundred sixty-eight million, seven hundred fifty-nine thousand, two hundred twenty-one".