7421019 has 16 divisors (see below), whose sum is σ = 10416384. Its totient is φ = 4690400.

The previous prime is 7421017. The next prime is 7421021. The reversal of 7421019 is 9101247.

7421019 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (7421017) and next prime (7421021).

It is a cyclic number.

It is not a de Polignac number, because 7421019 - 2¹ = 7421017 is a prime.

It is a super-2 number, since 2×7421019² = 110143045996722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 7421019.

It is not an unprimeable number, because it can be changed into a prime (7421017) 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 15 ways as a sum of consecutive naturals, for example, 8629 + ... + 9449.

It is an arithmetic number, because the mean of its divisors is an integer number (651024).

Almost surely, 2^7421019 is an apocalyptic number.

7421019 is a deficient number, since it is larger than the sum of its proper divisors (2995365).

7421019 is a wasteful number, since it uses less digits than its factorization.

7421019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 7421019 is about 2724.1547312882. The cubic root of 7421019 is about 195.0538444339.

The spelling of 7421019 in words is "seven million, four hundred twenty-one thousand, nineteen".