421242104 has 32 divisors (see below), whose sum is σ = 811240320. Its totient is φ = 204948576.

The previous prime is 421242091. The next prime is 421242131. The reversal of 421242104 is 401242124.

421242104 = T₃₃₇ + T₃₃₈ + ... + T₁₃₆₈.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95189 + ... + 99515.

It is an arithmetic number, because the mean of its divisors is an integer number (25351260).

Almost surely, 2^421242104 is an apocalyptic number.

It is an amenable number.

421242104 is a deficient number, since it is larger than the sum of its proper divisors (389998216).

421242104 is a wasteful number, since it uses less digits than its factorization.

421242104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4659 (or 4655 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 421242104 is about 20524.1833942303. The cubic root of 421242104 is about 749.6247628126.

Adding to 421242104 its sum of digits (20), we get a palindrome (421242124).

Adding to 421242104 its reverse (401242124), we get a palindrome (822484228).

The spelling of 421242104 in words is "four hundred twenty-one million, two hundred forty-two thousand, one hundred four".