421212134 has 24 divisors (see below), whose sum is σ = 741859560. Its totient is φ = 178827936.

The previous prime is 421212131. The next prime is 421212149. The reversal of 421212134 is 431212124.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421212131) 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 11 ways as a sum of consecutive naturals, for example, 9599 + ... + 30570.

It is an arithmetic number, because the mean of its divisors is an integer number (30910815).

Almost surely, 2^421212134 is an apocalyptic number.

421212134 is a deficient number, since it is larger than the sum of its proper divisors (320647426).

421212134 is a wasteful number, since it uses less digits than its factorization.

421212134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40292 (or 40285 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 421212134 is about 20523.4532669334. The cubic root of 421212134 is about 749.6069846064.

Adding to 421212134 its reverse (431212124), we get a palindrome (852424258).

The spelling of 421212134 in words is "four hundred twenty-one million, two hundred twelve thousand, one hundred thirty-four".