421400042 has 8 divisors (see below), whose sum is σ = 722400096. Its totient is φ = 180600012.

The previous prime is 421400033. The next prime is 421400071. The reversal of 421400042 is 240004124.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15049988 + ... + 15050015.

It is an arithmetic number, because the mean of its divisors is an integer number (90300012).

Almost surely, 2^421400042 is an apocalyptic number.

421400042 is a deficient number, since it is larger than the sum of its proper divisors (301000054).

421400042 is a wasteful number, since it uses less digits than its factorization.

421400042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30100012.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 421400042 is about 20528.0306410527. The cubic root of 421400042 is about 749.7184377175.

Adding to 421400042 its reverse (240004124), we get a palindrome (661404166).

The spelling of 421400042 in words is "four hundred twenty-one million, four hundred thousand, forty-two".