7184427121 has 3 divisors (see below), whose sum is σ = 7184511883. Its totient is φ = 7184342360.

The previous prime is 7184427101. The next prime is 7184427127. The reversal of 7184427121 is 1217244817.

The square root of 7184427121 is 84761.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 2544092721 + 4640334400 = 50439^2 + 68120^2 .

It is not a de Polignac number, because 7184427121 - 2²¹ = 7182329969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7184427127) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 42381 + ... + 127141.

Almost surely, 2^7184427121 is an apocalyptic number.

7184427121 is the 84761-st square number.

7184427121 is the 42381-st centered octagonal number.

It is an amenable number.

7184427121 is a deficient number, since it is larger than the sum of its proper divisors (84762).

7184427121 is an frugal number, since it uses more digits than its factorization.

7184427121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169522 (or 84761 counting only the distinct ones).

The product of its digits is 25088, while the sum is 37.

The cubic root of 7184427121 is about 1929.5855930572.

The spelling of 7184427121 in words is "seven billion, one hundred eighty-four million, four hundred twenty-seven thousand, one hundred twenty-one".