7427429 has 4 divisors (see below), whose sum is σ = 7437420. Its totient is φ = 7417440.

The previous prime is 7427353. The next prime is 7427443. The reversal of 7427429 is 9247247.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9247247 = 59 ⋅156733.

It can be written as a sum of positive squares in 2 ways, for example, as 5750404 + 1677025 = 2398^2 + 1295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7427429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7427449) 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, 3782 + ... + 5399.

It is an arithmetic number, because the mean of its divisors is an integer number (1859355).

Almost surely, 2^7427429 is an apocalyptic number.

It is an amenable number.

7427429 is a deficient number, since it is larger than the sum of its proper divisors (9991).

7427429 is an equidigital number, since it uses as much as digits as its factorization.

7427429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9990.

The product of its digits is 28224, while the sum is 35.

The square root of 7427429 is about 2725.3309890727. The cubic root of 7427429 is about 195.1099883556.

The spelling of 7427429 in words is "seven million, four hundred twenty-seven thousand, four hundred twenty-nine".