102022245 has 48 divisors (see below), whose sum is σ = 193131120. Its totient is φ = 49517568.

The previous prime is 102022241. The next prime is 102022301. The reversal of 102022245 is 542220201.

It can be written as a sum of positive squares in 8 ways, for example, as 13793796 + 88228449 = 3714^2 + 9393^2 .

It is not a de Polignac number, because 102022245 - 2² = 102022241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102022241) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 41511 + ... + 43899.

It is an arithmetic number, because the mean of its divisors is an integer number (4023565).

Almost surely, 2^102022245 is an apocalyptic number.

102022245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102022245 is a deficient number, since it is larger than the sum of its proper divisors (91108875).

102022245 is a wasteful number, since it uses less digits than its factorization.

102022245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486 (or 2483 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 102022245 is about 10100.6061699286. The cubic root of 102022245 is about 467.2668363642.

Adding to 102022245 its reverse (542220201), we get a palindrome (644242446).

The spelling of 102022245 in words is "one hundred two million, twenty-two thousand, two hundred forty-five".