42021140220 has 72 divisors (see below), whose sum is σ = 127518182064. Its totient is φ = 11200885248.

The previous prime is 42021140201. The next prime is 42021140237. The reversal of 42021140220 is 2204112024.

42021140220 is a `hidden beast` number, since 420 + 21 + 1 + 4 + 0 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 42021140193 and 42021140202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 386767 + ... + 483353.

It is an arithmetic number, because the mean of its divisors is an integer number (1771085862).

Almost surely, 2^42021140220 is an apocalyptic number.

It is an amenable number.

42021140220 is an abundant number, since it is smaller than the sum of its proper divisors (85497041844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42021140220 is a wasteful number, since it uses less digits than its factorization.

42021140220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99019 (or 99014 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 42021140220 its reverse (2204112024), we get a palindrome (44225252244).

The spelling of 42021140220 in words is "forty-two billion, twenty-one million, one hundred forty thousand, two hundred twenty".