102145732 has 24 divisors (see below), whose sum is σ = 193334400. Its totient is φ = 46941216.

The previous prime is 102145727. The next prime is 102145751. The reversal of 102145732 is 237541201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102145697 and 102145706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8319 + ... + 16537.

It is an arithmetic number, because the mean of its divisors is an integer number (8055600).

Almost surely, 2^102145732 is an apocalyptic number.

It is an amenable number.

102145732 is a deficient number, since it is larger than the sum of its proper divisors (91188668).

102145732 is a wasteful number, since it uses less digits than its factorization.

102145732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8475 (or 8473 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 102145732 is about 10106.7171722573. The cubic root of 102145732 is about 467.4552858375.

Adding to 102145732 its reverse (237541201), we get a palindrome (339686933).

The spelling of 102145732 in words is "one hundred two million, one hundred forty-five thousand, seven hundred thirty-two".