102003145 has 16 divisors (see below), whose sum is σ = 131545728. Its totient is φ = 75651840.

The previous prime is 102003127. The next prime is 102003149. The reversal of 102003145 is 541300201.

It is not a de Polignac number, because 102003145 - 2¹³ = 101994953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102003149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3261 + ... + 14650.

It is an arithmetic number, because the mean of its divisors is an integer number (8221608).

Almost surely, 2^102003145 is an apocalyptic number.

It is an amenable number.

102003145 is a deficient number, since it is larger than the sum of its proper divisors (29542583).

102003145 is a wasteful number, since it uses less digits than its factorization.

102003145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18000.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 102003145 is about 10099.6606378630. The cubic root of 102003145 is about 467.2376749018.

Adding to 102003145 its reverse (541300201), we get a palindrome (643303346).

The spelling of 102003145 in words is "one hundred two million, three thousand, one hundred forty-five".