4129630021 has 16 divisors (see below), whose sum is σ = 4773359808. Its totient is φ = 3530924800.

The previous prime is 4129630019. The next prime is 4129630027. The reversal of 4129630021 is 1200369214.

4129630021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 4129630021 - 2¹ = 4129630019 is a prime.

It is a super-2 number, since 2×4129630021² = 34107688220688920882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4129630027) 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, 294786 + ... + 308476.

It is an arithmetic number, because the mean of its divisors is an integer number (298334988).

Almost surely, 2^4129630021 is an apocalyptic number.

It is an amenable number.

4129630021 is a deficient number, since it is larger than the sum of its proper divisors (643729787).

4129630021 is a wasteful number, since it uses less digits than its factorization.

4129630021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15332.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 4129630021 is about 64262.1974492003. The cubic root of 4129630021 is about 1604.3669790742.

Adding to 4129630021 its reverse (1200369214), we get a palindrome (5329999235).

It can be divided in two parts, 41296 and 30021, that added together give a palindrome (71317).

The spelling of 4129630021 in words is "four billion, one hundred twenty-nine million, six hundred thirty thousand, twenty-one".