139872842 has 8 divisors (see below), whose sum is σ = 209874432. Its totient is φ = 69914700.

The previous prime is 139872841. The next prime is 139872877. The reversal of 139872842 is 248278931.

139872842 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 139872793 and 139872802.

It is not an unprimeable number, because it can be changed into a prime (139872841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1034 + ... + 16757.

It is an arithmetic number, because the mean of its divisors is an integer number (26234304).

Almost surely, 2^139872842 is an apocalyptic number.

139872842 is a deficient number, since it is larger than the sum of its proper divisors (70001590).

139872842 is a wasteful number, since it uses less digits than its factorization.

139872842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21724.

The product of its digits is 193536, while the sum is 44.

The square root of 139872842 is about 11826.7849392808. The cubic root of 139872842 is about 519.0921560978.

The spelling of 139872842 in words is "one hundred thirty-nine million, eight hundred seventy-two thousand, eight hundred forty-two".