20203408242 has 36 divisors (see below), whose sum is σ = 45760041054. Its totient is φ = 6441663360.

The previous prime is 20203408237. The next prime is 20203408249. The reversal of 20203408242 is 24280430202.

20203408242 is a `hidden beast` number, since 202 + 0 + 340 + 82 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19832807241 + 370601001 = 140829^2 + 19251^2 .

It is not an unprimeable number, because it can be changed into a prime (20203408249) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1051359 + ... + 1070402.

Almost surely, 2^20203408242 is an apocalyptic number.

20203408242 is an abundant number, since it is smaller than the sum of its proper divisors (25556632812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20203408242 is a wasteful number, since it uses less digits than its factorization.

20203408242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121815 (or 2121789 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 20203408242 its reverse (24280430202), we get a palindrome (44483838444).

The spelling of 20203408242 in words is "twenty billion, two hundred three million, four hundred eight thousand, two hundred forty-two".