42049478988 has 288 divisors, whose sum is σ = 127031224320. Its totient is φ = 11584235520.

The previous prime is 42049478953. The next prime is 42049479013. The reversal of 42049478988 is 88987494024.

42049478988 is a `hidden beast` number, since 42 + 0 + 49 + 478 + 9 + 88 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

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, 23904453 + ... + 23906211.

It is an arithmetic number, because the mean of its divisors is an integer number (441080640).

Almost surely, 2^42049478988 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 42049478988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63515612160).

42049478988 is an abundant number, since it is smaller than the sum of its proper divisors (84981745332).

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

42049478988 is a wasteful number, since it uses less digits than its factorization.

42049478988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917 (or 1912 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 63.

The spelling of 42049478988 in words is "forty-two billion, forty-nine million, four hundred seventy-eight thousand, nine hundred eighty-eight".