5420532121 has 4 divisors (see below), whose sum is σ = 5430025744. Its totient is φ = 5411038500.

The previous prime is 5420532077. The next prime is 5420532151. The reversal of 5420532121 is 1212350245.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1212350245 = 5 ⋅242470049.

It is a cyclic number.

It is not a de Polignac number, because 5420532121 - 2⁷ = 5420531993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5420532151) 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, 4745955 + ... + 4747096.

It is an arithmetic number, because the mean of its divisors is an integer number (1357506436).

Almost surely, 2^5420532121 is an apocalyptic number.

It is an amenable number.

5420532121 is a deficient number, since it is larger than the sum of its proper divisors (9493623).

5420532121 is an equidigital number, since it uses as much as digits as its factorization.

5420532121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9493622.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 5420532121 is about 73624.2631270426. The cubic root of 5420532121 is about 1756.6313968333.

Adding to 5420532121 its reverse (1212350245), we get a palindrome (6632882366).

The spelling of 5420532121 in words is "five billion, four hundred twenty million, five hundred thirty-two thousand, one hundred twenty-one".