2121403142 has 16 divisors (see below), whose sum is σ = 3226305600. Its totient is φ = 1046014632.

The previous prime is 2121403121. The next prime is 2121403187. The reversal of 2121403142 is 2413041212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82109 + ... + 104807.

It is an arithmetic number, because the mean of its divisors is an integer number (201644100).

Almost surely, 2^2121403142 is an apocalyptic number.

2121403142 is a deficient number, since it is larger than the sum of its proper divisors (1104902458).

2121403142 is a wasteful number, since it uses less digits than its factorization.

2121403142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23347.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2121403142 is about 46058.6923609431. The cubic root of 2121403142 is about 1284.9150104024.

Adding to 2121403142 its reverse (2413041212), we get a palindrome (4534444354).

The spelling of 2121403142 in words is "two billion, one hundred twenty-one million, four hundred three thousand, one hundred forty-two".