102942145 has 8 divisors (see below), whose sum is σ = 124001856. Its totient is φ = 82039536.

The previous prime is 102942143. The next prime is 102942167. The reversal of 102942145 is 541249201.

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 102942145 - 2¹ = 102942143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102942143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37827 + ... + 40456.

It is an arithmetic number, because the mean of its divisors is an integer number (15500232).

Almost surely, 2^102942145 is an apocalyptic number.

It is an amenable number.

102942145 is a deficient number, since it is larger than the sum of its proper divisors (21059711).

102942145 is an equidigital number, since it uses as much as digits as its factorization.

102942145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78551.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 102942145 is about 10146.0408534561. The cubic root of 102942145 is about 468.6670319527.

The spelling of 102942145 in words is "one hundred two million, nine hundred forty-two thousand, one hundred forty-five".