420020201242 has 8 divisors (see below), whose sum is σ = 634043234196. Its totient is φ = 208672456512.

The previous prime is 420020201207. The next prime is 420020201257. The reversal of 420020201242 is 242102020024.

It can be written as a sum of positive squares in 2 ways, for example, as 385865834761 + 34154366481 = 621181^2 + 184809^2 .

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

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, 668821663 + ... + 668822290.

Almost surely, 2^420020201242 is an apocalyptic number.

420020201242 is a deficient number, since it is larger than the sum of its proper divisors (214023032954).

420020201242 is a wasteful number, since it uses less digits than its factorization.

420020201242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337644112.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 420020201242 its reverse (242102020024), we get a palindrome (662122221266).

The spelling of 420020201242 in words is "four hundred twenty billion, twenty million, two hundred one thousand, two hundred forty-two".