20120403020 has 96 divisors (see below), whose sum is σ = 45381772800. Its totient is φ = 7470296064.

The previous prime is 20120402999. The next prime is 20120403071. The reversal of 20120403020 is 2030402102.

It is a junction number, because it is equal to n+sod(n) for n = 20120402986 and 20120403004.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7554209 + ... + 7556871.

It is an arithmetic number, because the mean of its divisors is an integer number (472726800).

Almost surely, 2^20120403020 is an apocalyptic number.

20120403020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20120403020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22690886400).

20120403020 is an abundant number, since it is smaller than the sum of its proper divisors (25261369780).

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

20120403020 is a wasteful number, since it uses less digits than its factorization.

20120403020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3087 (or 3085 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20120403020 its reverse (2030402102), we get a palindrome (22150805122).

The spelling of 20120403020 in words is "twenty billion, one hundred twenty million, four hundred three thousand, twenty".