5421450121 has 4 divisors (see below), whose sum is σ = 5441455744. Its totient is φ = 5401444500.

The previous prime is 5421450107. The next prime is 5421450143. The reversal of 5421450121 is 1210541245.

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.

It is a cyclic number.

It is not a de Polignac number, because 5421450121 - 2¹³ = 5421441929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5421450521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10002405 + ... + 10002946.

It is an arithmetic number, because the mean of its divisors is an integer number (1360363936).

Almost surely, 2^5421450121 is an apocalyptic number.

It is an amenable number.

5421450121 is a deficient number, since it is larger than the sum of its proper divisors (20005623).

5421450121 is a wasteful number, since it uses less digits than its factorization.

5421450121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20005622.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 5421450121 is about 73630.4972209206. The cubic root of 5421450121 is about 1756.7305566304.

Adding to 5421450121 its reverse (1210541245), we get a palindrome (6631991366).

The spelling of 5421450121 in words is "five billion, four hundred twenty-one million, four hundred fifty thousand, one hundred twenty-one".