103745 has 4 divisors (see below), whose sum is σ = 124500. Its totient is φ = 82992.

The previous prime is 103723. The next prime is 103769. The reversal of 103745 is 547301.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16129 + 87616 = 127^2 + 296^2 .

It is a cyclic number.

It is not a de Polignac number, because 103745 - 2⁶ = 103681 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 103745.

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 10370 + ... + 10379.

It is an arithmetic number, because the mean of its divisors is an integer number (31125).

2¹⁰³⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

103745 is a deficient number, since it is larger than the sum of its proper divisors (20755).

103745 is an equidigital number, since it uses as much as digits as its factorization.

103745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20754.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 103745 is about 322.0947065694. The cubic root of 103745 is about 46.9882270196.

Subtracting 103745 from its reverse (547301), we obtain a square (443556 = 666²).

It can be divided in two parts, 1037 and 45, that multiplied together give a triangular number (46665 = T₃₀₅).

The spelling of 103745 in words is "one hundred three thousand, seven hundred forty-five".