4000235420 has 48 divisors (see below), whose sum is σ = 8567814528. Its totient is φ = 1568286720.

The previous prime is 4000235399. The next prime is 4000235453. The reversal of 4000235420 is 245320004.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 4000235392 and 4000235401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1982252 + ... + 1984268.

It is an arithmetic number, because the mean of its divisors is an integer number (178496136).

Almost surely, 2^4000235420 is an apocalyptic number.

It is an amenable number.

4000235420 is an abundant number, since it is smaller than the sum of its proper divisors (4567579108).

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

4000235420 is a wasteful number, since it uses less digits than its factorization.

4000235420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3950 (or 3948 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 4000235420 is about 63247.4143345007. The cubic root of 4000235420 is about 1587.4321935202.

Adding to 4000235420 its reverse (245320004), we get a palindrome (4245555424).

The spelling of 4000235420 in words is "four billion, two hundred thirty-five thousand, four hundred twenty".