2121606042 has 8 divisors (see below), whose sum is σ = 4243212096. Its totient is φ = 707202012.

The previous prime is 2121606031. The next prime is 2121606163. The reversal of 2121606042 is 2406061212.

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

2121606042 is an admirable number.

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, 176800498 + ... + 176800509.

It is an arithmetic number, because the mean of its divisors is an integer number (530401512).

Almost surely, 2^2121606042 is an apocalyptic number.

2121606042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121606042 is a wasteful number, since it uses less digits than its factorization.

2121606042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353601012.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 2121606042 is about 46060.8949326867. The cubic root of 2121606042 is about 1284.9559740048.

Adding to 2121606042 its reverse (2406061212), we get a palindrome (4527667254).

The spelling of 2121606042 in words is "two billion, one hundred twenty-one million, six hundred six thousand, forty-two".