42508987326 has 64 divisors (see below), whose sum is σ = 101961296640. Its totient is φ = 13050067680.

The previous prime is 42508987303. The next prime is 42508987331. The reversal of 42508987326 is 62378980524.

42508987326 is a `hidden beast` number, since 42 + 508 + 9 + 8 + 73 + 26 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242641 + ... + 379331.

It is an arithmetic number, because the mean of its divisors is an integer number (1593145260).

Almost surely, 2^42508987326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42508987326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50980648320).

42508987326 is an abundant number, since it is smaller than the sum of its proper divisors (59452309314).

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

42508987326 is a wasteful number, since it uses less digits than its factorization.

42508987326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137158 (or 137152 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 42508987326 in words is "forty-two billion, five hundred eight million, nine hundred eighty-seven thousand, three hundred twenty-six".