10202040245 has 4 divisors (see below), whose sum is σ = 12242448300. Its totient is φ = 8161632192.

The previous prime is 10202040227. The next prime is 10202040257. The reversal of 10202040245 is 54204020201.

It is a happy number.

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 5500743889 + 4701296356 = 74167^2 + 68566^2 .

It is a cyclic number.

It is not a de Polignac number, because 10202040245 - 2²⁸ = 9933604789 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, 1020204020 + ... + 1020204029.

It is an arithmetic number, because the mean of its divisors is an integer number (3060612075).

Almost surely, 2^10202040245 is an apocalyptic number.

It is an amenable number.

10202040245 is a deficient number, since it is larger than the sum of its proper divisors (2040408055).

10202040245 is an equidigital number, since it uses as much as digits as its factorization.

10202040245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040408054.

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 10202040245 its reverse (54204020201), we get a palindrome (64406060446).

The spelling of 10202040245 in words is "ten billion, two hundred two million, forty thousand, two hundred forty-five".