20402143404 has 48 divisors (see below), whose sum is σ = 47832011136. Its totient is φ = 6768332800.

The previous prime is 20402143403. The next prime is 20402143451. The reversal of 20402143404 is 40434120402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20402143403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4842859 + ... + 4847069.

It is an arithmetic number, because the mean of its divisors is an integer number (996500232).

Almost surely, 2^20402143404 is an apocalyptic number.

It is an amenable number.

20402143404 is an abundant number, since it is smaller than the sum of its proper divisors (27429867732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20402143404 is a wasteful number, since it uses less digits than its factorization.

20402143404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6046 (or 6044 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20402143404 its reverse (40434120402), we get a palindrome (60836263806).

The spelling of 20402143404 in words is "twenty billion, four hundred two million, one hundred forty-three thousand, four hundred four".