20124040302 has 80 divisors (see below), whose sum is σ = 47098640160. Its totient is φ = 6410181888.

The previous prime is 20124040231. The next prime is 20124040319. The reversal of 20124040302 is 20304042102.

20124040302 is a `hidden beast` number, since 20 + 1 + 240 + 403 + 0 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5337474 + ... + 5341242.

It is an arithmetic number, because the mean of its divisors is an integer number (588733002).

Almost surely, 2^20124040302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20124040302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23549320080).

20124040302 is an abundant number, since it is smaller than the sum of its proper divisors (26974599858).

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

20124040302 is a wasteful number, since it uses less digits than its factorization.

20124040302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5239 (or 5230 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20124040302 its reverse (20304042102), we get a palindrome (40428082404).

The spelling of 20124040302 in words is "twenty billion, one hundred twenty-four million, forty thousand, three hundred two".