47820942 has 96 divisors (see below), whose sum is σ = 119988960. Its totient is φ = 14206752.

The previous prime is 47820919. The next prime is 47820959. The reversal of 47820942 is 24902874.

47820942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 47820897 and 47820906.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1648984 + ... + 1649012.

It is an arithmetic number, because the mean of its divisors is an integer number (1249885).

Almost surely, 2^47820942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47820942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59994480).

47820942 is an abundant number, since it is smaller than the sum of its proper divisors (72168018).

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

47820942 is an equidigital number, since it uses as much as digits as its factorization.

47820942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 47820942 is about 6915.2687583347. The cubic root of 47820942 is about 362.9716527280.

The spelling of 47820942 in words is "forty-seven million, eight hundred twenty thousand, nine hundred forty-two".