20202401042 has 4 divisors (see below), whose sum is σ = 30303601566. Its totient is φ = 10101200520.

The previous prime is 20202401039. The next prime is 20202401047. The reversal of 20202401042 is 24010420202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24010420202 = 2 ⋅12005210101.

It can be written as a sum of positive squares in only one way, i.e., 18725459281 + 1476941761 = 136841^2 + 38431^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20202401042.

It is not an unprimeable number, because it can be changed into a prime (20202401047) 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 as a sum of consecutive naturals, namely, 5050600259 + ... + 5050600262.

Almost surely, 2^20202401042 is an apocalyptic number.

20202401042 is a deficient number, since it is larger than the sum of its proper divisors (10101200524).

20202401042 is a wasteful number, since it uses less digits than its factorization.

20202401042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10101200523.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 20202401042 its reverse (24010420202), we get a palindrome (44212821244).

The spelling of 20202401042 in words is "twenty billion, two hundred two million, four hundred one thousand, forty-two".