3420841421 has 8 divisors (see below), whose sum is σ = 3542452920. Its totient is φ = 3299473408.

The previous prime is 3420841399. The next prime is 3420841423. The reversal of 3420841421 is 1241480243.

It can be written as a sum of positive squares in 4 ways, for example, as 2166902500 + 1253938921 = 46550^2 + 35411^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3420841421 - 2³⁰ = 2347099597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3420841423) 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, 32036 + ... + 88701.

It is an arithmetic number, because the mean of its divisors is an integer number (442806615).

Almost surely, 2^3420841421 is an apocalyptic number.

It is an amenable number.

3420841421 is a deficient number, since it is larger than the sum of its proper divisors (121611499).

3420841421 is a wasteful number, since it uses less digits than its factorization.

3420841421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121743.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 3420841421 is about 58487.9596241825. The cubic root of 3420841421 is about 1506.7608035384.

The spelling of 3420841421 in words is "three billion, four hundred twenty million, eight hundred forty-one thousand, four hundred twenty-one".