7421189 has 4 divisors (see below), whose sum is σ = 7452480. Its totient is φ = 7389900.

The previous prime is 7421173. The next prime is 7421207. The reversal of 7421189 is 9811247.

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: 9811247 = 79 ⋅124193.

It is a cyclic number.

It is not a de Polignac number, because 7421189 - 2⁴ = 7421173 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 (7421489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15287 + ... + 15764.

It is an arithmetic number, because the mean of its divisors is an integer number (1863120).

Almost surely, 2^7421189 is an apocalyptic number.

It is an amenable number.

7421189 is a deficient number, since it is larger than the sum of its proper divisors (31291).

7421189 is a wasteful number, since it uses less digits than its factorization.

7421189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31290.

The product of its digits is 4032, while the sum is 32.

The square root of 7421189 is about 2724.1859334487. The cubic root of 7421189 is about 195.0553338475.

The spelling of 7421189 in words is "seven million, four hundred twenty-one thousand, one hundred eighty-nine".