1020102245 has 4 divisors (see below), whose sum is σ = 1224122700. Its totient is φ = 816081792.

The previous prime is 1020102203. The next prime is 1020102253. The reversal of 1020102245 is 5422010201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 165533956 + 854568289 = 12866^2 + 29233^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020102245 - 2⁸ = 1020101989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102010220 + ... + 102010229.

It is an arithmetic number, because the mean of its divisors is an integer number (306030675).

Almost surely, 2^1020102245 is an apocalyptic number.

It is an amenable number.

1020102245 is a deficient number, since it is larger than the sum of its proper divisors (204020455).

1020102245 is an equidigital number, since it uses as much as digits as its factorization.

1020102245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204020454.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1020102245 is about 31939.0395127969. The cubic root of 1020102245 is about 1006.6563431223.

Adding to 1020102245 its reverse (5422010201), we get a palindrome (6442112446).

The spelling of 1020102245 in words is "one billion, twenty million, one hundred two thousand, two hundred forty-five".