7428429 has 20 divisors (see below), whose sum is σ = 11170236. Its totient is φ = 4919616.

The previous prime is 7428419. The next prime is 7428431. The reversal of 7428429 is 9248247.

7428429 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3143529 + 4284900 = 1773^2 + 2070^2 .

It is not a de Polignac number, because 7428429 - 2⁴ = 7428413 is a prime.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 7428393 and 7428402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7428409) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23577 + ... + 23889.

Almost surely, 2^7428429 is an apocalyptic number.

It is an amenable number.

7428429 is a deficient number, since it is larger than the sum of its proper divisors (3741807).

7428429 is a wasteful number, since it uses less digits than its factorization.

7428429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618 (or 609 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 7428429 is about 2725.5144468522. The cubic root of 7428429 is about 195.1187442447.

The spelling of 7428429 in words is "seven million, four hundred twenty-eight thousand, four hundred twenty-nine".