207138743 has 8 divisors (see below), whose sum is σ = 236978688. Its totient is φ = 177360984.

The previous prime is 207138739. The next prime is 207138749. The reversal of 207138743 is 347831702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 207138743 - 2² = 207138739 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207138749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8171 + ... + 21932.

It is an arithmetic number, because the mean of its divisors is an integer number (29622336).

Almost surely, 2^207138743 is an apocalyptic number.

207138743 is a deficient number, since it is larger than the sum of its proper divisors (29839945).

207138743 is an equidigital number, since it uses as much as digits as its factorization.

207138743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31093.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 207138743 is about 14392.3154148316. The cubic root of 207138743 is about 591.6803033644.

The spelling of 207138743 in words is "two hundred seven million, one hundred thirty-eight thousand, seven hundred forty-three".