2121005342 has 4 divisors (see below), whose sum is σ = 3181508016. Its totient is φ = 1060502670.

The previous prime is 2121005333. The next prime is 2121005407. The reversal of 2121005342 is 2435001212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530251334 + ... + 530251337.

It is an arithmetic number, because the mean of its divisors is an integer number (795377004).

Almost surely, 2^2121005342 is an apocalyptic number.

2121005342 is a deficient number, since it is larger than the sum of its proper divisors (1060502674).

2121005342 is a wasteful number, since it uses less digits than its factorization.

2121005342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060502673.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2121005342 is about 46054.3737553775. The cubic root of 2121005342 is about 1284.8346907414.

Adding to 2121005342 its reverse (2435001212), we get a palindrome (4556006554).

The spelling of 2121005342 in words is "two billion, one hundred twenty-one million, five thousand, three hundred forty-two".