202104745 has 4 divisors (see below), whose sum is σ = 242525700. Its totient is φ = 161683792.

The previous prime is 202104743. The next prime is 202104761. The reversal of 202104745 is 547401202.

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 131056704 + 71048041 = 11448^2 + 8429^2 .

It is a cyclic number.

It is not a de Polignac number, because 202104745 - 2¹ = 202104743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202104743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20210470 + ... + 20210479.

It is an arithmetic number, because the mean of its divisors is an integer number (60631425).

Almost surely, 2^202104745 is an apocalyptic number.

It is an amenable number.

202104745 is a deficient number, since it is larger than the sum of its proper divisors (40420955).

202104745 is an equidigital number, since it uses as much as digits as its factorization.

202104745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40420954.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 202104745 is about 14216.3548422231. The cubic root of 202104745 is about 586.8478304070.

Adding to 202104745 its reverse (547401202), we get a palindrome (749505947).

It can be divided in two parts, 20 and 2104745, that multiplied together give a triangular number (42094900 = T₉₁₇₅).

The spelling of 202104745 in words is "two hundred two million, one hundred four thousand, seven hundred forty-five".