942081840 has 720 divisors, whose sum is σ = 4075239168. Its totient is φ = 201180672.

The previous prime is 942081823. The next prime is 942081859. The reversal of 942081840 is 48180249.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 942081795 and 942081804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 21908859 + ... + 21908901.

Almost surely, 2^942081840 is an apocalyptic number.

942081840 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 942081840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2037619584).

942081840 is an abundant number, since it is smaller than the sum of its proper divisors (3133157328).

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

942081840 is a wasteful number, since it uses less digits than its factorization.

942081840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 942081840 is about 30693.3517231338. The cubic root of 942081840 is about 980.3087462576.

The spelling of 942081840 in words is "nine hundred forty-two million, eighty-one thousand, eight hundred forty".