421242012 has 96 divisors (see below), whose sum is σ = 1151754240. Its totient is φ = 132943680.

The previous prime is 421241999. The next prime is 421242037. The reversal of 421242012 is 210242124.

421242012 is a `hidden beast` number, since 421 + 242 + 0 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156018 + ... + 158694.

It is an arithmetic number, because the mean of its divisors is an integer number (11997440).

Almost surely, 2^421242012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421242012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (575877120).

421242012 is an abundant number, since it is smaller than the sum of its proper divisors (730512228).

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

421242012 is a wasteful number, since it uses less digits than its factorization.

421242012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768 (or 2760 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 421242012 is about 20524.1811529717. The cubic root of 421242012 is about 749.6247082394.

Adding to 421242012 its reverse (210242124), we get a palindrome (631484136).

The spelling of 421242012 in words is "four hundred twenty-one million, two hundred forty-two thousand, twelve".