2021342234 has 4 divisors (see below), whose sum is σ = 3032013354. Its totient is φ = 1010671116.

The previous prime is 2021342233. The next prime is 2021342263. The reversal of 2021342234 is 4322431202.

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

It can be written as a sum of positive squares in only one way, i.e., 2020772209 + 570025 = 44953^2 + 755^2 .

It is a super-2 number, since 2×2021342234² = 8171648853904221512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2021342233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505335557 + ... + 505335560.

Almost surely, 2^2021342234 is an apocalyptic number.

2021342234 is a deficient number, since it is larger than the sum of its proper divisors (1010671120).

2021342234 is a wasteful number, since it uses less digits than its factorization.

2021342234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010671119.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 2021342234 is about 44959.3397860778. The cubic root of 2021342234 is about 1264.3867908605.

Adding to 2021342234 its reverse (4322431202), we get a palindrome (6343773436).

The spelling of 2021342234 in words is "two billion, twenty-one million, three hundred forty-two thousand, two hundred thirty-four".