42021454120 has 48 divisors (see below), whose sum is σ = 99786437460. Its totient is φ = 15923913984.

The previous prime is 42021454103. The next prime is 42021454147. The reversal of 42021454120 is 2145412024.

It can be written as a sum of positive squares in 2 ways, for example, as 34769569156 + 7251884964 = 186466^2 + 85158^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1440597 + ... + 1469476.

Almost surely, 2^42021454120 is an apocalyptic number.

42021454120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42021454120 is an abundant number, since it is smaller than the sum of its proper divisors (57764983340).

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

42021454120 is a wasteful number, since it uses less digits than its factorization.

42021454120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2910122 (or 2910099 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 42021454120 its reverse (2145412024), we get a palindrome (44166866144).

The spelling of 42021454120 in words is "forty-two billion, twenty-one million, four hundred fifty-four thousand, one hundred twenty".