4020430434 has 64 divisors (see below), whose sum is σ = 8462776320. Its totient is φ = 1271911680.

The previous prime is 4020430433. The next prime is 4020430441. The reversal of 4020430434 is 4340340204.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4020430433) 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, 2246412 + ... + 2248200.

It is an arithmetic number, because the mean of its divisors is an integer number (132230880).

Almost surely, 2^4020430434 is an apocalyptic number.

4020430434 is an abundant number, since it is smaller than the sum of its proper divisors (4442345886).

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

4020430434 is a wasteful number, since it uses less digits than its factorization.

4020430434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 4020430434 is about 63406.8642498586. The cubic root of 4020430434 is about 1590.0990713950.

Adding to 4020430434 its reverse (4340340204), we get a palindrome (8360770638).

The spelling of 4020430434 in words is "four billion, twenty million, four hundred thirty thousand, four hundred thirty-four".