421020412 has 12 divisors (see below), whose sum is σ = 741045816. Its totient is φ = 209293040.

The previous prime is 421020409. The next prime is 421020427. The reversal of 421020412 is 214020124.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303514 + ... + 304897.

It is an arithmetic number, because the mean of its divisors is an integer number (61753818).

Almost surely, 2^421020412 is an apocalyptic number.

It is an amenable number.

421020412 is a deficient number, since it is larger than the sum of its proper divisors (320025404).

421020412 is a wasteful number, since it uses less digits than its factorization.

421020412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608588 (or 608586 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 421020412 is about 20518.7819326587. The cubic root of 421020412 is about 749.4932351444.

Adding to 421020412 its reverse (214020124), we get a palindrome (635040536).

The spelling of 421020412 in words is "four hundred twenty-one million, twenty thousand, four hundred twelve".