20020401242 has 8 divisors (see below), whose sum is σ = 30031316436. Its totient is φ = 10009962432.

The previous prime is 20020401223. The next prime is 20020401263. The reversal of 20020401242 is 24210402002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16012118521 + 4008282721 = 126539^2 + 63311^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 20020401242.

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, 17138 + ... + 200834.

Almost surely, 2^20020401242 is an apocalyptic number.

20020401242 is a deficient number, since it is larger than the sum of its proper divisors (10010915194).

20020401242 is a wasteful number, since it uses less digits than its factorization.

20020401242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238192.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 20020401242 its reverse (24210402002), we get a palindrome (44230803244).

The spelling of 20020401242 in words is "twenty billion, twenty million, four hundred one thousand, two hundred forty-two".