138802 has 4 divisors (see below), whose sum is σ = 208206. Its totient is φ = 69400.

The previous prime is 138799. The next prime is 138821. The reversal of 138802 is 208831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 208831 = 7 ⋅29833.

It can be written as a sum of positive squares in only one way, i.e., 109561 + 29241 = 331^2 + 171^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34699 + ... + 34702.

2¹³⁸⁸⁰² is an apocalyptic number.

138802 is a deficient number, since it is larger than the sum of its proper divisors (69404).

138802 is an equidigital number, since it uses as much as digits as its factorization.

138802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69403.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 138802 is about 372.5614043349. The cubic root of 138802 is about 51.7764068206.

The spelling of 138802 in words is "one hundred thirty-eight thousand, eight hundred two".