420243105 has 8 divisors (see below), whose sum is σ = 672388992. Its totient is φ = 224129648.

The previous prime is 420243067. The next prime is 420243113. The reversal of 420243105 is 501342024.

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 420243105 - 2²¹ = 418145953 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14008089 + ... + 14008118.

It is an arithmetic number, because the mean of its divisors is an integer number (84048624).

Almost surely, 2^420243105 is an apocalyptic number.

It is an amenable number.

420243105 is a deficient number, since it is larger than the sum of its proper divisors (252145887).

420243105 is a wasteful number, since it uses less digits than its factorization.

420243105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28016215.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 420243105 is about 20499.8318285785. The cubic root of 420243105 is about 749.0317015132.

Adding to 420243105 its reverse (501342024), we get a palindrome (921585129).

The spelling of 420243105 in words is "four hundred twenty million, two hundred forty-three thousand, one hundred five".