138452 has 6 divisors (see below), whose sum is σ = 242298. Its totient is φ = 69224.

The previous prime is 138451. The next prime is 138461. The reversal of 138452 is 254831.

It can be written as a sum of positive squares in only one way, i.e., 111556 + 26896 = 334^2 + 164^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17303 + ... + 17310.

It is an arithmetic number, because the mean of its divisors is an integer number (40383).

2¹³⁸⁴⁵² is an apocalyptic number.

It is an amenable number.

138452 is a deficient number, since it is larger than the sum of its proper divisors (103846).

138452 is a wasteful number, since it uses less digits than its factorization.

138452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34617 (or 34615 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 138452 is about 372.0913866243. The cubic root of 138452 is about 51.7328507826.

The spelling of 138452 in words is "one hundred thirty-eight thousand, four hundred fifty-two".