20124010404 has 18 divisors (see below), whose sum is σ = 50869026390. Its totient is φ = 6708003456.

The previous prime is 20124010399. The next prime is 20124010409. The reversal of 20124010404 is 40401042102.

20124010404 is a `hidden beast` number, since 20 + 1 + 240 + 1 + 0 + 404 = 666.

It is an interprime number because it is at equal distance from previous prime (20124010399) and next prime (20124010409).

It can be written as a sum of positive squares in only one way, i.e., 16230250404 + 3893760000 = 127398^2 + 62400^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20124010409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 279500109 + ... + 279500180.

Almost surely, 2^20124010404 is an apocalyptic number.

It is an amenable number.

20124010404 is an abundant number, since it is smaller than the sum of its proper divisors (30745015986).

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

20124010404 is a wasteful number, since it uses less digits than its factorization.

20124010404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559000299 (or 559000294 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20124010404 its reverse (40401042102), we get a palindrome (60525052506).

The spelling of 20124010404 in words is "twenty billion, one hundred twenty-four million, ten thousand, four hundred four".