423547021 has 8 divisors (see below), whose sum is σ = 433689984. Its totient is φ = 413520240.

The previous prime is 423546983. The next prime is 423547049. The reversal of 423547021 is 120745324.

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 423547021 - 2¹¹ = 423544973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423547081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21646 + ... + 36271.

It is an arithmetic number, because the mean of its divisors is an integer number (54211248).

Almost surely, 2^423547021 is an apocalyptic number.

It is an amenable number.

423547021 is a deficient number, since it is larger than the sum of its proper divisors (10142963).

423547021 is a wasteful number, since it uses less digits than its factorization.

423547021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58091.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 423547021 is about 20580.2580401704. The cubic root of 423547021 is about 750.9895211490.

The spelling of 423547021 in words is "four hundred twenty-three million, five hundred forty-seven thousand, twenty-one".