139166142 has 8 divisors (see below), whose sum is σ = 278332296. Its totient is φ = 46388712.

The previous prime is 139166141. The next prime is 139166143. The reversal of 139166142 is 241661931.

It is an interprime number because it is at equal distance from previous prime (139166141) and next prime (139166143).

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

139166142 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139166141) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11597173 + ... + 11597184.

It is an arithmetic number, because the mean of its divisors is an integer number (34791537).

Almost surely, 2^139166142 is an apocalyptic number.

139166142 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.

139166142 is a wasteful number, since it uses less digits than its factorization.

139166142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23194362.

The product of its digits is 7776, while the sum is 33.

The square root of 139166142 is about 11796.8700086082. The cubic root of 139166142 is about 518.2164512346.

The spelling of 139166142 in words is "one hundred thirty-nine million, one hundred sixty-six thousand, one hundred forty-two".