421423541 has 8 divisors (see below), whose sum is σ = 525411264. Its totient is φ = 328381920.

The previous prime is 421423537. The next prime is 421423571. The reversal of 421423541 is 145324124.

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 421423541 - 2² = 421423537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421423541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421423571) 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, 2736440 + ... + 2736593.

It is an arithmetic number, because the mean of its divisors is an integer number (65676408).

Almost surely, 2^421423541 is an apocalyptic number.

It is an amenable number.

421423541 is a deficient number, since it is larger than the sum of its proper divisors (103987723).

421423541 is a wasteful number, since it uses less digits than its factorization.

421423541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5473051.

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

The square root of 421423541 is about 20528.6029967945. The cubic root of 421423541 is about 749.7323732533.

Adding to 421423541 its reverse (145324124), we get a palindrome (566747665).

The spelling of 421423541 in words is "four hundred twenty-one million, four hundred twenty-three thousand, five hundred forty-one".