5421102421 has 16 divisors (see below), whose sum is σ = 6356133504. Its totient is φ = 4527753984.

The previous prime is 5421102389. The next prime is 5421102431. The reversal of 5421102421 is 1242011245.

It is a cyclic number.

It is not a de Polignac number, because 5421102421 - 2⁵ = 5421102389 is a prime.

It is a super-2 number, since 2×5421102421² = 58776702917944122482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5421102392 and 5421102401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5421102431) 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, 21496 + ... + 106321.

It is an arithmetic number, because the mean of its divisors is an integer number (397258344).

Almost surely, 2^5421102421 is an apocalyptic number.

It is an amenable number.

5421102421 is a deficient number, since it is larger than the sum of its proper divisors (935031083).

5421102421 is a wasteful number, since it uses less digits than its factorization.

5421102421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127980.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 5421102421 is about 73628.1360690327. The cubic root of 5421102421 is about 1756.6930003642.

Adding to 5421102421 its reverse (1242011245), we get a palindrome (6663113666).

The spelling of 5421102421 in words is "five billion, four hundred twenty-one million, one hundred two thousand, four hundred twenty-one".