7421145 has 8 divisors (see below), whose sum is σ = 11873856. Its totient is φ = 3957936.

The previous prime is 7421143. The next prime is 7421173. The reversal of 7421145 is 5411247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7421145 - 2¹ = 7421143 is a prime.

It is a super-2 number, since 2×7421145² = 110146786222050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7421143) 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 7 ways as a sum of consecutive naturals, for example, 247357 + ... + 247386.

It is an arithmetic number, because the mean of its divisors is an integer number (1484232).

Almost surely, 2^7421145 is an apocalyptic number.

It is an amenable number.

7421145 is a deficient number, since it is larger than the sum of its proper divisors (4452711).

7421145 is a wasteful number, since it uses less digits than its factorization.

7421145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494751.

The product of its digits is 1120, while the sum is 24.

The square root of 7421145 is about 2724.1778576297. The cubic root of 7421145 is about 195.0549483544.

The spelling of 7421145 in words is "seven million, four hundred twenty-one thousand, one hundred forty-five".