4040031420 has 144 divisors (see below), whose sum is σ = 12827243520. Its totient is φ = 1027306368.

The previous prime is 4040031407. The next prime is 4040031433. The reversal of 4040031420 is 241300404.

It is an interprime number because it is at equal distance from previous prime (4040031407) and next prime (4040031433).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 4040031393 and 4040031402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1518051 + ... + 1520709.

It is an arithmetic number, because the mean of its divisors is an integer number (89078080).

Almost surely, 2^4040031420 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 4040031420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6413621760).

4040031420 is an abundant number, since it is smaller than the sum of its proper divisors (8787212100).

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

4040031420 is a wasteful number, since it uses less digits than its factorization.

4040031420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3064 (or 3059 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 4040031420 is about 63561.2414919658. The cubic root of 4040031420 is about 1592.6789772121.

Adding to 4040031420 its reverse (241300404), we get a palindrome (4281331824).

The spelling of 4040031420 in words is "four billion, forty million, thirty-one thousand, four hundred twenty".