42123201 has 4 divisors (see below), whose sum is σ = 56164272. Its totient is φ = 28082132.

The previous prime is 42123199. The next prime is 42123217. The reversal of 42123201 is 10232124.

42123201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42123201 - 2¹ = 42123199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42123271) 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, 7020531 + ... + 7020536.

It is an arithmetic number, because the mean of its divisors is an integer number (14041068).

Almost surely, 2^42123201 is an apocalyptic number.

It is an amenable number.

42123201 is a deficient number, since it is larger than the sum of its proper divisors (14041071).

42123201 is a wasteful number, since it uses less digits than its factorization.

42123201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14041070.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 42123201 is about 6490.2389016122. The cubic root of 42123201 is about 347.9422136180.

Adding to 42123201 its reverse (10232124), we get a palindrome (52355325).

It can be divided in two parts, 42123 and 201, that added together give a palindrome (42324).

The spelling of 42123201 in words is "forty-two million, one hundred twenty-three thousand, two hundred one".