420343434231242 has 64 divisors (see below), whose sum is σ = 648615773836800. Its totient is φ = 204262914248640.

The previous prime is 420343434231241. The next prime is 420343434231247. The reversal of 420343434231242 is 242132434343024.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 420343434231242.

It is not an unprimeable number, because it can be changed into a prime (420343434231241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 900857333 + ... + 901323815.

It is an arithmetic number, because the mean of its divisors is an integer number (10134621466200).

Almost surely, 2^{420343434231242} is an apocalyptic number.

420343434231242 is a deficient number, since it is larger than the sum of its proper divisors (228272339605558).

420343434231242 is a wasteful number, since it uses less digits than its factorization.

420343434231242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467091.

The product of its (nonzero) digits is 1327104, while the sum is 41.

Adding to 420343434231242 its reverse (242132434343024), we get a palindrome (662475868574266).

The spelling of 420343434231242 in words is "four hundred twenty trillion, three hundred forty-three billion, four hundred thirty-four million, two hundred thirty-one thousand, two hundred forty-two".