139168 has 12 divisors (see below), whose sum is σ = 274050. Its totient is φ = 69568.

The previous prime is 139133. The next prime is 139169. The reversal of 139168 is 861931.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 138384 + 784 = 372^2 + 28^2 .

It is not an unprimeable number, because it can be changed into a prime (139169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2143 + ... + 2206.

2¹³⁹¹⁶⁸ is an apocalyptic number.

It is an amenable number.

139168 is a deficient number, since it is larger than the sum of its proper divisors (134882).

139168 is an equidigital number, since it uses as much as digits as its factorization.

139168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4359 (or 4351 counting only the distinct ones).

The product of its digits is 1296, while the sum is 28.

The square root of 139168 is about 373.0522751572. The cubic root of 139168 is about 51.8218757451.

It can be divided in two parts, 13916 and 8, that added together give a square (13924 = 118²).

The spelling of 139168 in words is "one hundred thirty-nine thousand, one hundred sixty-eight".