421228735 has 8 divisors (see below), whose sum is σ = 511565040. Its totient is φ = 332922624.

The previous prime is 421228733. The next prime is 421228777. The reversal of 421228735 is 537822124.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 421228735 - 2¹ = 421228733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421228735.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421228733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507090 + ... + 507919.

It is an arithmetic number, because the mean of its divisors is an integer number (63945630).

Almost surely, 2^421228735 is an apocalyptic number.

421228735 is a deficient number, since it is larger than the sum of its proper divisors (90336305).

421228735 is a wasteful number, since it uses less digits than its factorization.

421228735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015097.

The product of its digits is 26880, while the sum is 34.

The square root of 421228735 is about 20523.8577026835. The cubic root of 421228735 is about 749.6168324250.

The spelling of 421228735 in words is "four hundred twenty-one million, two hundred twenty-eight thousand, seven hundred thirty-five".