421540046 has 8 divisors (see below), whose sum is σ = 652707264. Its totient is φ = 203970960.

The previous prime is 421540037. The next prime is 421540069. The reversal of 421540046 is 640045124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 421539997 and 421540024.

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 3 ways as a sum of consecutive naturals, for example, 3399455 + ... + 3399578.

It is an arithmetic number, because the mean of its divisors is an integer number (81588408).

Almost surely, 2^421540046 is an apocalyptic number.

421540046 is a deficient number, since it is larger than the sum of its proper divisors (231167218).

421540046 is a wasteful number, since it uses less digits than its factorization.

421540046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6799066.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 421540046 is about 20531.4404268186. The cubic root of 421540046 is about 749.8014561859.

The spelling of 421540046 in words is "four hundred twenty-one million, five hundred forty thousand, forty-six".