421242103 has 8 divisors (see below), whose sum is σ = 445104000. Its totient is φ = 397549368.

The previous prime is 421242091. The next prime is 421242131. The reversal of 421242103 is 301242124.

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

It is a cyclic number.

It is not a de Polignac number, because 421242103 - 2⁵ = 421242071 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421242403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37153 + ... + 47146.

It is an arithmetic number, because the mean of its divisors is an integer number (55638000).

Almost surely, 2^421242103 is an apocalyptic number.

421242103 is a deficient number, since it is larger than the sum of its proper divisors (23861897).

421242103 is a wasteful number, since it uses less digits than its factorization.

421242103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84581.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 421242103 is about 20524.1833698688. The cubic root of 421242103 is about 749.6247622194.

Adding to 421242103 its reverse (301242124), we get a palindrome (722484227).

The spelling of 421242103 in words is "four hundred twenty-one million, two hundred forty-two thousand, one hundred three".