420043342 has 16 divisors (see below), whose sum is σ = 657960480. Its totient is φ = 200737152.

The previous prime is 420043331. The next prime is 420043343. The reversal of 420043342 is 243340024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420043343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78034 + ... + 83242.

It is an arithmetic number, because the mean of its divisors is an integer number (41122530).

Almost surely, 2^420043342 is an apocalyptic number.

420043342 is a deficient number, since it is larger than the sum of its proper divisors (237917138).

420043342 is a wasteful number, since it uses less digits than its factorization.

420043342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6987.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 420043342 is about 20494.9589411640. The cubic root of 420043342 is about 748.9129983681.

Adding to 420043342 its reverse (243340024), we get a palindrome (663383366).

The spelling of 420043342 in words is "four hundred twenty million, forty-three thousand, three hundred forty-two".