4100421021 has 8 divisors (see below), whose sum is σ = 5473233024. Its totient is φ = 2730611520.

The previous prime is 4100421019. The next prime is 4100421053. The reversal of 4100421021 is 1201240014.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4100421021 - 2¹ = 4100421019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4100421121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747436 + ... + 752901.

It is an arithmetic number, because the mean of its divisors is an integer number (684154128).

Almost surely, 2^4100421021 is an apocalyptic number.

It is an amenable number.

4100421021 is a deficient number, since it is larger than the sum of its proper divisors (1372812003).

4100421021 is a wasteful number, since it uses less digits than its factorization.

4100421021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501251.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 4100421021 is about 64034.5299116032. The cubic root of 4100421021 is about 1600.5754467894.

Adding to 4100421021 its reverse (1201240014), we get a palindrome (5301661035).

The spelling of 4100421021 in words is "four billion, one hundred million, four hundred twenty-one thousand, twenty-one".