20423032402 has 16 divisors (see below), whose sum is σ = 31270340952. Its totient is φ = 10000298880.

The previous prime is 20423032337. The next prime is 20423032403.

20423032402 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 20223968521 + 199063881 = 142211^2 + 14109^2 .

It is not an unprimeable number, because it can be changed into a prime (20423032403) 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 in 7 ways as a sum of consecutive naturals, for example, 120723 + ... + 235414.

Almost surely, 2^20423032402 is an apocalyptic number.

20423032402 is a deficient number, since it is larger than the sum of its proper divisors (10847308550).

20423032402 is a wasteful number, since it uses less digits than its factorization.

20423032402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356733.

The product of its (nonzero) digits is 2304, while the sum is 22.

It can be divided in two parts, 204230 and 32402, that added together give a palindrome (236632).

The spelling of 20423032402 in words is "twenty billion, four hundred twenty-three million, thirty-two thousand, four hundred two".