102145312 has 12 divisors (see below), whose sum is σ = 201098646. Its totient is φ = 51072640.

The previous prime is 102145301. The next prime is 102145327. The reversal of 102145312 is 213541201.

It can be written as a sum of positive squares in only one way, i.e., 100881936 + 1263376 = 10044^2 + 1124^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102145312.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1595989 + ... + 1596052.

Almost surely, 2^102145312 is an apocalyptic number.

It is an amenable number.

102145312 is a deficient number, since it is larger than the sum of its proper divisors (98953334).

102145312 is an equidigital number, since it uses as much as digits as its factorization.

102145312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192051 (or 3192043 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 102145312 is about 10106.6963939756. The cubic root of 102145312 is about 467.4546451467.

Adding to 102145312 its reverse (213541201), we get a palindrome (315686513).

The spelling of 102145312 in words is "one hundred two million, one hundred forty-five thousand, three hundred twelve".