42021120122 has 8 divisors (see below), whose sum is σ = 63123968736. Its totient is φ = 20979797212.

The previous prime is 42021120121. The next prime is 42021120137. The reversal of 42021120122 is 22102112024.

42021120122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42021120122.

It is not an unprimeable number, because it can be changed into a prime (42021120121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15379718 + ... + 15382449.

It is an arithmetic number, because the mean of its divisors is an integer number (7890496092).

Almost surely, 2^42021120122 is an apocalyptic number.

42021120122 is a deficient number, since it is larger than the sum of its proper divisors (21102848614).

42021120122 is a wasteful number, since it uses less digits than its factorization.

42021120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30762852.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 42021120122 its reverse (22102112024), we get a palindrome (64123232146).

The spelling of 42021120122 in words is "forty-two billion, twenty-one million, one hundred twenty thousand, one hundred twenty-two".