42509328408 has 96 divisors (see below), whose sum is σ = 118590544800. Its totient is φ = 13747622400.

The previous prime is 42509328371. The next prime is 42509328409. The reversal of 42509328408 is 80482390524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42509328409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 494533 + ... + 574091.

It is an arithmetic number, because the mean of its divisors is an integer number (1235318175).

Almost surely, 2^42509328408 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 42509328408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59295272400).

42509328408 is an abundant number, since it is smaller than the sum of its proper divisors (76081216392).

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

42509328408 is a wasteful number, since it uses less digits than its factorization.

42509328408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79793 (or 79786 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 42509328408 in words is "forty-two billion, five hundred nine million, three hundred twenty-eight thousand, four hundred eight".