4020401420 has 96 divisors (see below), whose sum is σ = 9869368320. Its totient is φ = 1347229440.

The previous prime is 4020401419. The next prime is 4020401431. The reversal of 4020401420 is 241040204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1424771 + ... + 1427589.

It is an arithmetic number, because the mean of its divisors is an integer number (102805920).

Almost surely, 2^4020401420 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 4020401420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4934684160).

4020401420 is an abundant number, since it is smaller than the sum of its proper divisors (5848966900).

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

4020401420 is a wasteful number, since it uses less digits than its factorization.

4020401420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3063 (or 3061 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 4020401420 is about 63406.6354571822. The cubic root of 4020401420 is about 1590.0952463281.

Adding to 4020401420 its reverse (241040204), we get a palindrome (4261441624).

The spelling of 4020401420 in words is "four billion, twenty million, four hundred one thousand, four hundred twenty".