2042120450 has 24 divisors (see below), whose sum is σ = 3833201460. Its totient is φ = 809352000.

The previous prime is 2042120413. The next prime is 2042120459. The reversal of 2042120450 is 540212402.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1543625521 + 498494929 = 39289^2 + 22327^2 .

It is not an unprimeable number, because it can be changed into a prime (2042120459) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 181901 + ... + 192800.

Almost surely, 2^2042120450 is an apocalyptic number.

2042120450 is a deficient number, since it is larger than the sum of its proper divisors (1791081010).

2042120450 is a wasteful number, since it uses less digits than its factorization.

2042120450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374822 (or 374817 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 2042120450 is about 45189.8268418900. The cubic root of 2042120450 is about 1268.7044158439.

Adding to 2042120450 its reverse (540212402), we get a palindrome (2582332852).

The spelling of 2042120450 in words is "two billion, forty-two million, one hundred twenty thousand, four hundred fifty".