4234001220 has 240 divisors, whose sum is σ = 13620410496. Its totient is φ = 1100736000.

The previous prime is 4234001179. The next prime is 4234001221. The reversal of 4234001220 is 221004324.

4234001220 is a `hidden beast` number, since 42 + 3 + 400 + 1 + 220 = 666.

It is a super-2 number, since 2×4234001220² = 35853532661922976800, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 4234001193 and 4234001202.

It is not an unprimeable number, because it can be changed into a prime (4234001221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 15067480 + ... + 15067760.

Almost surely, 2^4234001220 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 4234001220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6810205248).

4234001220 is an abundant number, since it is smaller than the sum of its proper divisors (9386409276).

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

4234001220 is a wasteful number, since it uses less digits than its factorization.

4234001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504 (or 493 counting only the distinct ones).

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

The square root of 4234001220 is about 65069.2033146250. The cubic root of 4234001220 is about 1617.7708022366.

Adding to 4234001220 its reverse (221004324), we get a palindrome (4455005544).

The spelling of 4234001220 in words is "four billion, two hundred thirty-four million, one thousand, two hundred twenty".