421432011 has 128 divisors (see below), whose sum is σ = 867041280. Its totient is φ = 195177600.

The previous prime is 421432009. The next prime is 421432049. The reversal of 421432011 is 110234124.

421432011 is a `hidden beast` number, since 421 + 43 + 201 + 1 = 666.

It is not a de Polignac number, because 421432011 - 2¹ = 421432009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421432061) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 837586 + ... + 838088.

It is an arithmetic number, because the mean of its divisors is an integer number (6773760).

Almost surely, 2^421432011 is an apocalyptic number.

421432011 is an abundant number, since it is smaller than the sum of its proper divisors (445609269).

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

421432011 is a wasteful number, since it uses less digits than its factorization.

421432011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 568 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 421432011 is about 20528.8092932834. The cubic root of 421432011 is about 749.7373960630.

Adding to 421432011 its reverse (110234124), we get a palindrome (531666135).

The spelling of 421432011 in words is "four hundred twenty-one million, four hundred thirty-two thousand, eleven".