421042134 has 16 divisors (see below), whose sum is σ = 850422960. Its totient is φ = 138957600.

The previous prime is 421042133. The next prime is 421042157. The reversal of 421042134 is 431240124.

It is a self number, because there is not a number n which added to its sum of digits gives 421042134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421042133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346789 + ... + 348000.

It is an arithmetic number, because the mean of its divisors is an integer number (53151435).

Almost surely, 2^421042134 is an apocalyptic number.

421042134 is an abundant number, since it is smaller than the sum of its proper divisors (429380826).

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

421042134 is a wasteful number, since it uses less digits than its factorization.

421042134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694895.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 421042134 is about 20519.3112457509. The cubic root of 421042134 is about 749.5061246320.

Adding to 421042134 its reverse (431240124), we get a palindrome (852282258).

The spelling of 421042134 in words is "four hundred twenty-one million, forty-two thousand, one hundred thirty-four".