4030012421 has 4 divisors (see below), whose sum is σ = 4032518700. Its totient is φ = 4027506144.

The previous prime is 4030012411. The next prime is 4030012429. The reversal of 4030012421 is 1242100304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2267188225 + 1762824196 = 47615^2 + 41986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4030012421 is a prime.

It is a super-2 number, since 2×4030012421² = 32482000226828562482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4030012421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4030012429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250726 + ... + 1253943.

It is an arithmetic number, because the mean of its divisors is an integer number (1008129675).

Almost surely, 2^4030012421 is an apocalyptic number.

It is an amenable number.

4030012421 is a deficient number, since it is larger than the sum of its proper divisors (2506279).

4030012421 is a wasteful number, since it uses less digits than its factorization.

4030012421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506278.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 4030012421 is about 63482.3788227883. The cubic root of 4030012421 is about 1591.3613094008.

Adding to 4030012421 its reverse (1242100304), we get a palindrome (5272112725).

The spelling of 4030012421 in words is "four billion, thirty million, twelve thousand, four hundred twenty-one".