102012650 has 12 divisors (see below), whose sum is σ = 189743622. Its totient is φ = 40805040.

The previous prime is 102012643. The next prime is 102012697. The reversal of 102012650 is 56210201.

It can be written as a sum of positive squares in 3 ways, for example, as 90117049 + 11895601 = 9493^2 + 3449^2 .

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 5 ways as a sum of consecutive naturals, for example, 1020077 + ... + 1020176.

Almost surely, 2^102012650 is an apocalyptic number.

102012650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102012650 is a deficient number, since it is larger than the sum of its proper divisors (87730972).

102012650 is a wasteful number, since it uses less digits than its factorization.

102012650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040265 (or 2040260 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 102012650 is about 10100.1311872668. The cubic root of 102012650 is about 467.2521873830.

Adding to 102012650 its reverse (56210201), we get a palindrome (158222851).

The spelling of 102012650 in words is "one hundred two million, twelve thousand, six hundred fifty".