42515112420 has 288 divisors, whose sum is σ = 145523589120. Its totient is φ = 9957991680.

The previous prime is 42515112413. The next prime is 42515112461. The reversal of 42515112420 is 2421151524.

It is a happy number.

42515112420 is a `hidden beast` number, since 4 + 2 + 515 + 1 + 124 + 20 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7348849 + ... + 7354631.

It is an arithmetic number, because the mean of its divisors is an integer number (505290240).

Almost surely, 2^42515112420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42515112420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72761794560).

42515112420 is an abundant number, since it is smaller than the sum of its proper divisors (103008476700).

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

42515112420 is a wasteful number, since it uses less digits than its factorization.

42515112420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5935 (or 5930 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 42515112420 its reverse (2421151524), we get a palindrome (44936263944).

The spelling of 42515112420 in words is "forty-two billion, five hundred fifteen million, one hundred twelve thousand, four hundred twenty".