202442434505 has 4 divisors (see below), whose sum is σ = 242930921412. Its totient is φ = 161953947600.

The previous prime is 202442434457. The next prime is 202442434529. The reversal of 202442434505 is 505434244202.

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 52997564944 + 149444869561 = 230212^2 + 386581^2 .

It is a de Polignac number, because none of the positive numbers 2^k-202442434505 is a prime.

It is a super-2 number, since 2×202442434505² (a number of 23 digits) contains 22 as substring.

It is a Duffinian 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, 20244243446 + ... + 20244243455.

It is an arithmetic number, because the mean of its divisors is an integer number (60732730353).

Almost surely, 2^202442434505 is an apocalyptic number.

It is an amenable number.

202442434505 is a deficient number, since it is larger than the sum of its proper divisors (40488486907).

202442434505 is an equidigital number, since it uses as much as digits as its factorization.

202442434505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40488486906.

The product of its (nonzero) digits is 153600, while the sum is 35.

Adding to 202442434505 its reverse (505434244202), we get a palindrome (707876678707).

The spelling of 202442434505 in words is "two hundred two billion, four hundred forty-two million, four hundred thirty-four thousand, five hundred five".