421310042 has 8 divisors (see below), whose sum is σ = 642325332. Its totient is φ = 207201600.

The previous prime is 421310041. The next prime is 421310051. The reversal of 421310042 is 240013124.

It can be written as a sum of positive squares in 2 ways, for example, as 294499921 + 126810121 = 17161^2 + 11261^2 .

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 421310042.

It is not an unprimeable number, because it can be changed into a prime (421310041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1726559 + ... + 1726802.

Almost surely, 2^421310042 is an apocalyptic number.

421310042 is a deficient number, since it is larger than the sum of its proper divisors (221015290).

421310042 is a wasteful number, since it uses less digits than its factorization.

421310042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3453424.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 421310042 is about 20525.8383994418. The cubic root of 421310042 is about 749.6650605171.

Adding to 421310042 its reverse (240013124), we get a palindrome (661323166).

The spelling of 421310042 in words is "four hundred twenty-one million, three hundred ten thousand, forty-two".