20431204242 has 8 divisors (see below), whose sum is σ = 40862408496. Its totient is φ = 6810401412.

The previous prime is 20431204237. The next prime is 20431204271. The reversal of 20431204242 is 24240213402.

It is a sphenic number, since it is the product of 3 distinct primes.

20431204242 is an admirable 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, 1702600348 + ... + 1702600359.

It is an arithmetic number, because the mean of its divisors is an integer number (5107801062).

Almost surely, 2^20431204242 is an apocalyptic number.

20431204242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20431204242 is a wasteful number, since it uses less digits than its factorization.

20431204242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3405200712.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20431204242 its reverse (24240213402), we get a palindrome (44671417644).

The spelling of 20431204242 in words is "twenty billion, four hundred thirty-one million, two hundred four thousand, two hundred forty-two".