20243002402 has 24 divisors (see below), whose sum is σ = 35342422956. Its totient is φ = 8670549888.

The previous prime is 20243002391. The next prime is 20243002411. The reversal of 20243002402 is 20420034202.

It can be written as a sum of positive squares in 2 ways, for example, as 12680786881 + 7562215521 = 112609^2 + 86961^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20243002402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112878 + ... + 230710.

Almost surely, 2^20243002402 is an apocalyptic number.

20243002402 is a deficient number, since it is larger than the sum of its proper divisors (15099420554).

20243002402 is a wasteful number, since it uses less digits than its factorization.

20243002402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119602 (or 119595 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 20243002402 its reverse (20420034202), we get a palindrome (40663036604).

The spelling of 20243002402 in words is "twenty billion, two hundred forty-three million, two thousand, four hundred two".