5426240021 has 4 divisors (see below), whose sum is σ = 5487209100. Its totient is φ = 5365270944.

The previous prime is 5426240009. The next prime is 5426240159. The reversal of 5426240021 is 1200426245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1200426245 = 5 ⋅240085249.

It can be written as a sum of positive squares in 2 ways, for example, as 781817521 + 4644422500 = 27961^2 + 68150^2 .

It is a cyclic number.

It is not a de Polignac number, because 5426240021 - 2³⁰ = 4352498197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5426240321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30484406 + ... + 30484583.

It is an arithmetic number, because the mean of its divisors is an integer number (1371802275).

Almost surely, 2^5426240021 is an apocalyptic number.

It is an amenable number.

5426240021 is a deficient number, since it is larger than the sum of its proper divisors (60969079).

5426240021 is an equidigital number, since it uses as much as digits as its factorization.

5426240021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60969078.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 5426240021 is about 73663.0166433605. The cubic root of 5426240021 is about 1757.2477667622.

Adding to 5426240021 its reverse (1200426245), we get a palindrome (6626666266).

The spelling of 5426240021 in words is "five billion, four hundred twenty-six million, two hundred forty thousand, twenty-one".