421823356 has 12 divisors (see below), whose sum is σ = 740857768. Its totient is φ = 210149712.

The previous prime is 421823287. The next prime is 421823359. The reversal of 421823356 is 653328124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421823359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189246 + ... + 191461.

Almost surely, 2^421823356 is an apocalyptic number.

It is an amenable number.

421823356 is a deficient number, since it is larger than the sum of its proper divisors (319034412).

421823356 is a wasteful number, since it uses less digits than its factorization.

421823356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380988 (or 380986 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 421823356 is about 20538.3386864663. The cubic root of 421823356 is about 749.9693948993.

The spelling of 421823356 in words is "four hundred twenty-one million, eight hundred twenty-three thousand, three hundred fifty-six".