421070 has 32 divisors (see below), whose sum is σ = 846720. Its totient is φ = 149760.

The previous prime is 421049. The next prime is 421079. The reversal of 421070 is 70124.

It is a happy number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 421070.

It is not an unprimeable number, because it can be changed into a prime (421079) by changing a digit.

421070 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5291 + ... + 5369.

It is an arithmetic number, because the mean of its divisors is an integer number (26460).

2⁴²¹⁰⁷⁰ is an apocalyptic number.

421070 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.

421070 is a wasteful number, since it uses less digits than its factorization.

421070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 421070 is about 648.8990676523. The cubic root of 421070 is about 74.9522659222.

Adding to 421070 its reverse (70124), we get a palindrome (491194).

The spelling of 421070 in words is "four hundred twenty-one thousand, seventy", and thus it is an iban number.