102945 has 8 divisors (see below), whose sum is σ = 164736. Its totient is φ = 54896.

The previous prime is 102931. The next prime is 102953. The reversal of 102945 is 549201.

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 102945 - 2⁴ = 102929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3417 + ... + 3446.

It is an arithmetic number, because the mean of its divisors is an integer number (20592).

2¹⁰²⁹⁴⁵ is an apocalyptic number.

102945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102945 is a deficient number, since it is larger than the sum of its proper divisors (61791).

102945 is an equidigital number, since it uses as much as digits as its factorization.

102945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6871.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 102945 is about 320.8504324448. The cubic root of 102945 is about 46.8671364587.

The spelling of 102945 in words is "one hundred two thousand, nine hundred forty-five".