5435320421 has 4 divisors (see below), whose sum is σ = 5435519532. Its totient is φ = 5435121312.

The previous prime is 5435320391. The next prime is 5435320441. The reversal of 5435320421 is 1240235345.

It is a happy number.

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 1452448321 + 3982872100 = 38111^2 + 63110^2 .

It is a cyclic number.

It is not a de Polignac number, because 5435320421 - 2¹⁰ = 5435319397 is a prime.

It is a super-5 number, since 5×5435320421⁵ (a number of 50 digits) contains 55555 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 (5435320441) 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, 50576 + ... + 115881.

It is an arithmetic number, because the mean of its divisors is an integer number (1358879883).

Almost surely, 2^5435320421 is an apocalyptic number.

It is an amenable number.

5435320421 is a deficient number, since it is larger than the sum of its proper divisors (199111).

5435320421 is a wasteful number, since it uses less digits than its factorization.

5435320421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199110.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 5435320421 is about 73724.6256077303. The cubic root of 5435320421 is about 1758.2274273347.

Adding to 5435320421 its reverse (1240235345), we get a palindrome (6675555766).

The spelling of 5435320421 in words is "five billion, four hundred thirty-five million, three hundred twenty thousand, four hundred twenty-one".