421534104 has 16 divisors (see below), whose sum is σ = 1053835320. Its totient is φ = 140511360.

The previous prime is 421534073. The next prime is 421534109. The reversal of 421534104 is 401435124.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 17563921 = 421534104 / (4 + 2 + 1 + 5 + 3 + 4 + 1 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421534109) 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, 8781937 + ... + 8781984.

Almost surely, 2^421534104 is an apocalyptic number.

It is an amenable number.

421534104 is an abundant number, since it is smaller than the sum of its proper divisors (632301216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421534104 is a wasteful number, since it uses less digits than its factorization.

421534104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17563930 (or 17563926 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 421534104 is about 20531.2957214103. The cubic root of 421534104 is about 749.7979331191.

Adding to 421534104 its reverse (401435124), we get a palindrome (822969228).

The spelling of 421534104 in words is "four hundred twenty-one million, five hundred thirty-four thousand, one hundred four".