5678439942 has 64 divisors (see below), whose sum is σ = 13415952384. Its totient is φ = 1567969920.

The previous prime is 5678439931. The next prime is 5678439961. The reversal of 5678439942 is 2499348765.

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, 1139368 + ... + 1144340.

It is an arithmetic number, because the mean of its divisors is an integer number (209624256).

Almost surely, 2^5678439942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5678439942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6707976192).

5678439942 is an abundant number, since it is smaller than the sum of its proper divisors (7737512442).

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

5678439942 is a wasteful number, since it uses less digits than its factorization.

5678439942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5893.

The product of its digits is 13063680, while the sum is 57.

The square root of 5678439942 is about 75355.4241047053. The cubic root of 5678439942 is about 1784.0609153843.

The spelling of 5678439942 in words is "five billion, six hundred seventy-eight million, four hundred thirty-nine thousand, nine hundred forty-two".