4030040421 has 12 divisors (see below), whose sum is σ = 6350366880. Its totient is φ = 2442448680.

The previous prime is 4030040411. The next prime is 4030040423. The reversal of 4030040421 is 1240400304.

It is not a de Polignac number, because 4030040421 - 2⁷ = 4030040293 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4030040394 and 4030040403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4030040423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20353641 + ... + 20353838.

It is an arithmetic number, because the mean of its divisors is an integer number (529197240).

Almost surely, 2^4030040421 is an apocalyptic number.

It is an amenable number.

4030040421 is a deficient number, since it is larger than the sum of its proper divisors (2320326459).

4030040421 is a wasteful number, since it uses less digits than its factorization.

4030040421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40707496 (or 40707493 counting only the distinct ones).

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

The square root of 4030040421 is about 63482.5993560440. The cubic root of 4030040421 is about 1591.3649949158.

Adding to 4030040421 its reverse (1240400304), we get a palindrome (5270440725).

The spelling of 4030040421 in words is "four billion, thirty million, forty thousand, four hundred twenty-one".