421345434 has 8 divisors (see below), whose sum is σ = 842690880. Its totient is φ = 140448476.

The previous prime is 421345411. The next prime is 421345439. The reversal of 421345434 is 434543124.

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

421345434 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (421345439) 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, 35112114 + ... + 35112125.

It is an arithmetic number, because the mean of its divisors is an integer number (105336360).

Almost surely, 2^421345434 is an apocalyptic number.

421345434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

421345434 is a wasteful number, since it uses less digits than its factorization.

421345434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70224244.

The product of its digits is 23040, while the sum is 30.

The square root of 421345434 is about 20526.7005142083. The cubic root of 421345434 is about 749.6860517114.

Adding to 421345434 its reverse (434543124), we get a palindrome (855888558).

The spelling of 421345434 in words is "four hundred twenty-one million, three hundred forty-five thousand, four hundred thirty-four".