421041432 has 32 divisors (see below), whose sum is σ = 1202976000. Its totient is φ = 120297504.

The previous prime is 421041421. The next prime is 421041451. The reversal of 421041432 is 234140124.

It is a super-2 number, since 2×421041432² = 354551774921221248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 421041399 and 421041408.

It is a congruent number.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 1252932 + ... + 1253267.

It is an arithmetic number, because the mean of its divisors is an integer number (37593000).

Almost surely, 2^421041432 is an apocalyptic number.

421041432 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

421041432 is an abundant number, since it is smaller than the sum of its proper divisors (781934568).

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

421041432 is a wasteful number, since it uses less digits than its factorization.

421041432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506215 (or 2506211 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 421041432 is about 20519.2941399065. The cubic root of 421041432 is about 749.5057080833.

Adding to 421041432 its reverse (234140124), we get a palindrome (655181556).

The spelling of 421041432 in words is "four hundred twenty-one million, forty-one thousand, four hundred thirty-two".