20202231242 has 4 divisors (see below), whose sum is σ = 30303346866. Its totient is φ = 10101115620.

The previous prime is 20202231199. The next prime is 20202231271. The reversal of 20202231242 is 24213220202.

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

It can be written as a sum of positive squares in only one way, i.e., 18829602841 + 1372628401 = 137221^2 + 37049^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050557809 + ... + 5050557812.

Almost surely, 2^20202231242 is an apocalyptic number.

20202231242 is a deficient number, since it is larger than the sum of its proper divisors (10101115624).

20202231242 is a wasteful number, since it uses less digits than its factorization.

20202231242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10101115623.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20202231242 its reverse (24213220202), we get a palindrome (44415451444).

The spelling of 20202231242 in words is "twenty billion, two hundred two million, two hundred thirty-one thousand, two hundred forty-two".