4214121421 has 4 divisors (see below), whose sum is σ = 4231607644. Its totient is φ = 4196635200.

The previous prime is 4214121419. The next prime is 4214121469. The reversal of 4214121421 is 1241214124.

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 1170392521 + 3043728900 = 34211^2 + 55170^2 .

It is a cyclic number.

It is not a de Polignac number, because 4214121421 - 2¹ = 4214121419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4214121392 and 4214121401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4214121481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8742750 + ... + 8743231.

It is an arithmetic number, because the mean of its divisors is an integer number (1057901911).

Almost surely, 2^4214121421 is an apocalyptic number.

It is an amenable number.

4214121421 is a deficient number, since it is larger than the sum of its proper divisors (17486223).

4214121421 is a wasteful number, since it uses less digits than its factorization.

4214121421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17486222.

The product of its digits is 512, while the sum is 22.

The square root of 4214121421 is about 64916.2646876728. The cubic root of 4214121421 is about 1615.2348696551.

Adding to 4214121421 its reverse (1241214124), we get a palindrome (5455335545).

The spelling of 4214121421 in words is "four billion, two hundred fourteen million, one hundred twenty-one thousand, four hundred twenty-one".