139278192 has 40 divisors (see below), whose sum is σ = 363377040. Its totient is φ = 45964800.

The previous prime is 139278163. The next prime is 139278199. The reversal of 139278192 is 291872931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139278199) 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 7 ways as a sum of consecutive naturals, for example, 9517 + ... + 19212.

It is an arithmetic number, because the mean of its divisors is an integer number (9084426).

Almost surely, 2^139278192 is an apocalyptic number.

139278192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139278192 is an abundant number, since it is smaller than the sum of its proper divisors (224098848).

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

139278192 is a wasteful number, since it uses less digits than its factorization.

139278192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28841 (or 28835 counting only the distinct ones).

The product of its digits is 54432, while the sum is 42.

The square root of 139278192 is about 11801.6181941291. The cubic root of 139278192 is about 518.3554950553.

The spelling of 139278192 in words is "one hundred thirty-nine million, two hundred seventy-eight thousand, one hundred ninety-two".