138435 has 16 divisors (see below), whose sum is σ = 241920. Its totient is φ = 67040.

The previous prime is 138433. The next prime is 138449. The reversal of 138435 is 534831.

It is not a de Polignac number, because 138435 - 2¹ = 138433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255 + ... + 584.

It is an arithmetic number, because the mean of its divisors is an integer number (15120).

2¹³⁸⁴³⁵ is an apocalyptic number.

138435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138435 is a deficient number, since it is larger than the sum of its proper divisors (103485).

138435 is a wasteful number, since it uses less digits than its factorization.

138435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858.

The product of its digits is 1440, while the sum is 24.

The square root of 138435 is about 372.0685420726. The cubic root of 138435 is about 51.7307333352.

It can be divided in two parts, 13 and 8435, that added together give a palindrome (8448).

The spelling of 138435 in words is "one hundred thirty-eight thousand, four hundred thirty-five".