2121504442 has 8 divisors (see below), whose sum is σ = 3182493600. Its totient is φ = 1060673244.

The previous prime is 2121504403. The next prime is 2121504457. The reversal of 2121504442 is 2444051212.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3409 + ... + 65227.

It is an arithmetic number, because the mean of its divisors is an integer number (397811700).

Almost surely, 2^2121504442 is an apocalyptic number.

2121504442 is a deficient number, since it is larger than the sum of its proper divisors (1060989158).

2121504442 is a wasteful number, since it uses less digits than its factorization.

2121504442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78980.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 2121504442 is about 46059.7920316625. The cubic root of 2121504442 is about 1284.9354622465.

Adding to 2121504442 its reverse (2444051212), we get a palindrome (4565555654).

The spelling of 2121504442 in words is "two billion, one hundred twenty-one million, five hundred four thousand, four hundred forty-two".