42155236321 has 8 divisors (see below), whose sum is σ = 46091345184. Its totient is φ = 38236429920.

The previous prime is 42155236309. The next prime is 42155236327. The reversal of 42155236321 is 12363255124.

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

It is a cyclic number.

It is not a de Polignac number, because 42155236321 - 2¹¹ = 42155234273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42155236327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4320516 + ... + 4330261.

It is an arithmetic number, because the mean of its divisors is an integer number (5761418148).

Almost surely, 2^42155236321 is an apocalyptic number.

It is an amenable number.

42155236321 is a deficient number, since it is larger than the sum of its proper divisors (3936108863).

42155236321 is a wasteful number, since it uses less digits than its factorization.

42155236321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8651231.

The product of its digits is 43200, while the sum is 34.

The spelling of 42155236321 in words is "forty-two billion, one hundred fifty-five million, two hundred thirty-six thousand, three hundred twenty-one".