7442729 has 8 divisors (see below), whose sum is σ = 8544960. Its totient is φ = 6350256.

The previous prime is 7442681. The next prime is 7442749. The reversal of 7442729 is 9272447.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7442729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7442749) 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, 719 + ... + 3924.

It is an arithmetic number, because the mean of its divisors is an integer number (1068120).

Almost surely, 2^7442729 is an apocalyptic number.

It is an amenable number.

7442729 is a deficient number, since it is larger than the sum of its proper divisors (1102231).

7442729 is a wasteful number, since it uses less digits than its factorization.

7442729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4879.

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

The square root of 7442729 is about 2728.1365435036. The cubic root of 7442729 is about 195.2438675847.

The spelling of 7442729 in words is "seven million, four hundred forty-two thousand, seven hundred twenty-nine".