23121242 has 8 divisors (see below), whose sum is σ = 34806132. Its totient is φ = 11519200.

The previous prime is 23121209. The next prime is 23121247. The reversal of 23121242 is 24212132.

It can be written as a sum of positive squares in 2 ways, for example, as 22762441 + 358801 = 4771^2 + 599^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 23121242.

It is not an unprimeable number, because it can be changed into a prime (23121247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20009 + ... + 21132.

Almost surely, 2^23121242 is an apocalyptic number.

23121242 is a deficient number, since it is larger than the sum of its proper divisors (11684890).

23121242 is a wasteful number, since it uses less digits than its factorization.

23121242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41424.

The product of its digits is 192, while the sum is 17.

The square root of 23121242 is about 4808.4552613079. The cubic root of 23121242 is about 284.8855270238.

Adding to 23121242 its reverse (24212132), we get a palindrome (47333374).

The spelling of 23121242 in words is "twenty-three million, one hundred twenty-one thousand, two hundred forty-two".