4240021434 has 128 divisors (see below), whose sum is σ = 10016980992. Its totient is φ = 1183554240.

The previous prime is 4240021277. The next prime is 4240021441. The reversal of 4240021434 is 4341200424.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4779739 + ... + 4780625.

It is an arithmetic number, because the mean of its divisors is an integer number (78257664).

Almost surely, 2^4240021434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4240021434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5008490496).

4240021434 is an abundant number, since it is smaller than the sum of its proper divisors (5776959558).

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

4240021434 is a wasteful number, since it uses less digits than its factorization.

4240021434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 4240021434 is about 65115.4469692100. The cubic root of 4240021434 is about 1618.5371942411.

Adding to 4240021434 its reverse (4341200424), we get a palindrome (8581221858).

The spelling of 4240021434 in words is "four billion, two hundred forty million, twenty-one thousand, four hundred thirty-four".