207138 has 32 divisors (see below), whose sum is σ = 460800. Its totient is φ = 61776.

The previous prime is 207127. The next prime is 207139. The reversal of 207138 is 831702.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 207138.

It is not an unprimeable number, because it can be changed into a prime (207139) by changing a digit.

207138 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2583 + ... + 2661.

It is an arithmetic number, because the mean of its divisors is an integer number (14400).

2²⁰⁷¹³⁸ is an apocalyptic number.

207138 is an abundant number, since it is smaller than the sum of its proper divisors (253662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

207138 is a wasteful number, since it uses less digits than its factorization.

207138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 207138 is about 455.1241588841. The cubic root of 207138 is about 59.1679595918.

The spelling of 207138 in words is "two hundred seven thousand, one hundred thirty-eight".