420423440034242 has 16 divisors (see below), whose sum is σ = 630732035630400. Its totient is φ = 210179429289648.

The previous prime is 420423440034239. The next prime is 420423440034281. The reversal of 420423440034242 is 242430044324024.

It is a happy number.

It is a super-2 number, since 2×420423440034242² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420423440034196 and 420423440034205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 836081009 + ... + 836583707.

It is an arithmetic number, because the mean of its divisors is an integer number (39420752226900).

Almost surely, 2^{420423440034242} is an apocalyptic number.

420423440034242 is a deficient number, since it is larger than the sum of its proper divisors (210308595596158).

420423440034242 is a wasteful number, since it uses less digits than its factorization.

420423440034242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566105.

The product of its (nonzero) digits is 589824, while the sum is 38.

Adding to 420423440034242 its reverse (242430044324024), we get a palindrome (662853484358266).

The spelling of 420423440034242 in words is "four hundred twenty trillion, four hundred twenty-three billion, four hundred forty million, thirty-four thousand, two hundred forty-two".