421403204042 has 8 divisors (see below), whose sum is σ = 632648321856. Its totient is φ = 210520430092.

The previous prime is 421403204041. The next prime is 421403204077. The reversal of 421403204042 is 240402304124.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (421403204041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90583058 + ... + 90587709.

It is an arithmetic number, because the mean of its divisors is an integer number (79081040232).

Almost surely, 2^421403204042 is an apocalyptic number.

421403204042 is a deficient number, since it is larger than the sum of its proper divisors (211245117814).

421403204042 is a wasteful number, since it uses less digits than its factorization.

421403204042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181171932.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 421403204042 its reverse (240402304124), we get a palindrome (661805508166).

The spelling of 421403204042 in words is "four hundred twenty-one billion, four hundred three million, two hundred four thousand, forty-two".