138862 has 4 divisors (see below), whose sum is σ = 208296. Its totient is φ = 69430.

The previous prime is 138841. The next prime is 138863. The reversal of 138862 is 268831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 268831 = 19 ⋅14149.

It is a self number, because there is not a number n which added to its sum of digits gives 138862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34714 + ... + 34717.

It is an arithmetic number, because the mean of its divisors is an integer number (52074).

2¹³⁸⁸⁶² is an apocalyptic number.

138862 is a deficient number, since it is larger than the sum of its proper divisors (69434).

138862 is an equidigital number, since it uses as much as digits as its factorization.

138862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69433.

The product of its digits is 2304, while the sum is 28.

The square root of 138862 is about 372.6419192737. The cubic root of 138862 is about 51.7838662157.

It can be divided in two parts, 13886 and 2, that multiplied together give a palindrome (27772).

The spelling of 138862 in words is "one hundred thirty-eight thousand, eight hundred sixty-two".