7421965 has 4 divisors (see below), whose sum is σ = 8906364. Its totient is φ = 5937568.

The previous prime is 7421963. The next prime is 7421987. The reversal of 7421965 is 5691247.

7421965 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3305124 + 4116841 = 1818^2 + 2029^2 .

It is a cyclic number.

It is not a de Polignac number, because 7421965 - 2¹ = 7421963 is a prime.

It is a super-2 number, since 2×7421965² = 110171128922450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7421965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7421963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 742192 + ... + 742201.

It is an arithmetic number, because the mean of its divisors is an integer number (2226591).

Almost surely, 2^7421965 is an apocalyptic number.

It is an amenable number.

7421965 is a deficient number, since it is larger than the sum of its proper divisors (1484399).

7421965 is a wasteful number, since it uses less digits than its factorization.

7421965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484398.

The product of its digits is 15120, while the sum is 34.

The square root of 7421965 is about 2724.3283575957. The cubic root of 7421965 is about 195.0621322938.

The spelling of 7421965 in words is "seven million, four hundred twenty-one thousand, nine hundred sixty-five".