4135243420 has 96 divisors (see below), whose sum is σ = 10848821760. Its totient is φ = 1286288640.

The previous prime is 4135243403. The next prime is 4135243423. The reversal of 4135243420 is 243425314.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4135243423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 839926 + ... + 844834.

It is an arithmetic number, because the mean of its divisors is an integer number (113008560).

Almost surely, 2^4135243420 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 4135243420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5424410880).

4135243420 is an abundant number, since it is smaller than the sum of its proper divisors (6713578340).

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

4135243420 is a wasteful number, since it uses less digits than its factorization.

4135243420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5483 (or 5481 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 4135243420 is about 64305.8583645378. The cubic root of 4135243420 is about 1605.0935877080.

Adding to 4135243420 its reverse (243425314), we get a palindrome (4378668734).

The spelling of 4135243420 in words is "four billion, one hundred thirty-five million, two hundred forty-three thousand, four hundred twenty".