139188234 has 8 divisors (see below), whose sum is σ = 278376480. Its totient is φ = 46396076.

The previous prime is 139188221. The next prime is 139188239. The reversal of 139188234 is 432881931.

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

139188234 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 139188192 and 139188201.

It is not an unprimeable number, because it can be changed into a prime (139188239) 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, 11599014 + ... + 11599025.

It is an arithmetic number, because the mean of its divisors is an integer number (34797060).

Almost surely, 2^139188234 is an apocalyptic number.

139188234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

139188234 is a wasteful number, since it uses less digits than its factorization.

139188234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23198044.

The product of its digits is 41472, while the sum is 39.

The square root of 139188234 is about 11797.8063215159. The cubic root of 139188234 is about 518.2438712951.

The spelling of 139188234 in words is "one hundred thirty-nine million, one hundred eighty-eight thousand, two hundred thirty-four".