42021043115 has 8 divisors (see below), whose sum is σ = 50569738800. Its totient is φ = 33520509792.

The previous prime is 42021043111. The next prime is 42021043121. The reversal of 42021043115 is 51134012024.

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 42021043115 - 2² = 42021043111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42021043111) 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, 12038669 + ... + 12042158.

It is an arithmetic number, because the mean of its divisors is an integer number (6321217350).

Almost surely, 2^42021043115 is an apocalyptic number.

42021043115 is a deficient number, since it is larger than the sum of its proper divisors (8548695685).

42021043115 is a wasteful number, since it uses less digits than its factorization.

42021043115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24081181.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 42021043115 its reverse (51134012024), we get a palindrome (93155055139).

The spelling of 42021043115 in words is "forty-two billion, twenty-one million, forty-three thousand, one hundred fifteen".