2021420104 has 64 divisors (see below), whose sum is σ = 4183280640. Its totient is φ = 908112960.

The previous prime is 2021420099. The next prime is 2021420111. The reversal of 2021420104 is 4010241202.

It is a super-2 number, since 2×2021420104² = 8172278473710741632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3864787 + ... + 3865309.

It is an arithmetic number, because the mean of its divisors is an integer number (65363760).

Almost surely, 2^2021420104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021420104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2091640320).

2021420104 is an abundant number, since it is smaller than the sum of its proper divisors (2161860536).

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

2021420104 is a wasteful number, since it uses less digits than its factorization.

2021420104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970 (or 966 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2021420104 is about 44960.2057824472. The cubic root of 2021420104 is about 1264.4030270250.

Adding to 2021420104 its reverse (4010241202), we get a palindrome (6031661306).

The spelling of 2021420104 in words is "two billion, twenty-one million, four hundred twenty thousand, one hundred four".