2043421442 has 4 divisors (see below), whose sum is σ = 3065132166. Its totient is φ = 1021710720.

The previous prime is 2043421433. The next prime is 2043421469. The reversal of 2043421442 is 2441243402.

It is a happy number.

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., 1791913561 + 251507881 = 42331^2 + 15859^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510855359 + ... + 510855362.

Almost surely, 2^2043421442 is an apocalyptic number.

2043421442 is a deficient number, since it is larger than the sum of its proper divisors (1021710724).

2043421442 is a wasteful number, since it uses less digits than its factorization.

2043421442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021710723.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 2043421442 is about 45204.2192942208. The cubic root of 2043421442 is about 1268.9737802855.

Adding to 2043421442 its reverse (2441243402), we get a palindrome (4484664844).

The spelling of 2043421442 in words is "two billion, forty-three million, four hundred twenty-one thousand, four hundred forty-two".