2121343142 has 4 divisors (see below), whose sum is σ = 3182014716. Its totient is φ = 1060671570.

The previous prime is 2121343139. The next prime is 2121343151. The reversal of 2121343142 is 2413431212.

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

It is a super-2 number, since 2×2121343142² = 9000193452220864328, which contains 22 as substring.

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, 530335784 + ... + 530335787.

It is an arithmetic number, because the mean of its divisors is an integer number (795503679).

Almost surely, 2^2121343142 is an apocalyptic number.

2121343142 is a deficient number, since it is larger than the sum of its proper divisors (1060671574).

2121343142 is a wasteful number, since it uses less digits than its factorization.

2121343142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060671573.

The product of its digits is 1152, while the sum is 23.

The square root of 2121343142 is about 46058.0410134865. The cubic root of 2121343142 is about 1284.9028964661.

Adding to 2121343142 its reverse (2413431212), we get a palindrome (4534774354).

The spelling of 2121343142 in words is "two billion, one hundred twenty-one million, three hundred forty-three thousand, one hundred forty-two".