7420829 has 8 divisors (see below), whose sum is σ = 8066520. Its totient is φ = 6785856.

The previous prime is 7420813. The next prime is 7420837. The reversal of 7420829 is 9280247.

It can be written as a sum of positive squares in 4 ways, for example, as 1684804 + 5736025 = 1298^2 + 2395^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7420829 - 2⁴ = 7420813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7420795 and 7420804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7420529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1202 + ... + 4035.

It is an arithmetic number, because the mean of its divisors is an integer number (1008315).

Almost surely, 2^7420829 is an apocalyptic number.

It is an amenable number.

7420829 is a deficient number, since it is larger than the sum of its proper divisors (645691).

7420829 is a wasteful number, since it uses less digits than its factorization.

7420829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5359.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 7420829 is about 2724.1198578624. The cubic root of 7420829 is about 195.0521797682.

The spelling of 7420829 in words is "seven million, four hundred twenty thousand, eight hundred twenty-nine".