2123421242 has 8 divisors (see below), whose sum is σ = 3262818132. Its totient is φ = 1035815200.

The previous prime is 2123421239. The next prime is 2123421253. The reversal of 2123421242 is 2421243212.

It can be written as a sum of positive squares in 2 ways, for example, as 1614512761 + 508908481 = 40181^2 + 22559^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12947609 + ... + 12947772.

Almost surely, 2^2123421242 is an apocalyptic number.

2123421242 is a deficient number, since it is larger than the sum of its proper divisors (1139396890).

2123421242 is a wasteful number, since it uses less digits than its factorization.

2123421242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25895424.

The product of its digits is 1536, while the sum is 23.

The square root of 2123421242 is about 46080.5950699424. The cubic root of 2123421242 is about 1285.3223296736.

Adding to 2123421242 its reverse (2421243212), we get a palindrome (4544664454).

The spelling of 2123421242 in words is "two billion, one hundred twenty-three million, four hundred twenty-one thousand, two hundred forty-two".