4020021054 has 96 divisors (see below), whose sum is σ = 10405886400. Its totient is φ = 1120492800.

The previous prime is 4020021053. The next prime is 4020021067. The reversal of 4020021054 is 4501200204.

4020021054 is a `hidden beast` number, since 402 + 0 + 0 + 210 + 54 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020021053) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 245194 + ... + 261074.

It is an arithmetic number, because the mean of its divisors is an integer number (108394650).

Almost surely, 2^4020021054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4020021054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5202943200).

4020021054 is an abundant number, since it is smaller than the sum of its proper divisors (6385865346).

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

4020021054 is a wasteful number, since it uses less digits than its factorization.

4020021054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15951 (or 15934 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 4020021054 is about 63403.6359682944. The cubic root of 4020021054 is about 1590.0450989937.

Adding to 4020021054 its reverse (4501200204), we get a palindrome (8521221258).

The spelling of 4020021054 in words is "four billion, twenty million, twenty-one thousand, fifty-four".