102021244 has 18 divisors (see below), whose sum is σ = 193328520. Its totient is φ = 47086416.

The previous prime is 102021197. The next prime is 102021251. The reversal of 102021244 is 442120201.

It is a congruent number.

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, 74784 + ... + 76135.

Almost surely, 2^102021244 is an apocalyptic number.

It is an amenable number.

102021244 is a deficient number, since it is larger than the sum of its proper divisors (91307276).

102021244 is a wasteful number, since it uses less digits than its factorization.

102021244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150949 (or 150934 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 102021244 is about 10100.5566183255. The cubic root of 102021244 is about 467.2653081497.

Adding to 102021244 its reverse (442120201), we get a palindrome (544141445).

The spelling of 102021244 in words is "one hundred two million, twenty-one thousand, two hundred forty-four".