4023420040 has 64 divisors (see below), whose sum is σ = 9257976000. Its totient is φ = 1573182720.

The previous prime is 4023420013. The next prime is 4023420047. The reversal of 4023420040 is 400243204.

It is not an unprimeable number, because it can be changed into a prime (4023420047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 422451 + ... + 431869.

It is an arithmetic number, because the mean of its divisors is an integer number (144655875).

Almost surely, 2^4023420040 is an apocalyptic number.

4023420040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4023420040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4628988000).

4023420040 is an abundant number, since it is smaller than the sum of its proper divisors (5234555960).

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

4023420040 is a wasteful number, since it uses less digits than its factorization.

4023420040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9670 (or 9666 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 4023420040 is about 63430.4346508835. The cubic root of 4023420040 is about 1590.4931081349.

Adding to 4023420040 its reverse (400243204), we get a palindrome (4423663244).

The spelling of 4023420040 in words is "four billion, twenty-three million, four hundred twenty thousand, forty".