7440124729 has 2 divisors, whose sum is σ = 7440124730. Its totient is φ = 7440124728.

The previous prime is 7440124721. The next prime is 7440124739. The reversal of 7440124729 is 9274210447.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4854605625 + 2585519104 = 69675^2 + 50848^2 .

It is a cyclic number.

It is not a de Polignac number, because 7440124729 - 2³ = 7440124721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7440124691 and 7440124700.

It is not a weakly prime, because it can be changed into another prime (7440124721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3720062364 + 3720062365.

It is an arithmetic number, because the mean of its divisors is an integer number (3720062365).

Almost surely, 2^7440124729 is an apocalyptic number.

It is an amenable number.

7440124729 is a deficient number, since it is larger than the sum of its proper divisors (1).

7440124729 is an equidigital number, since it uses as much as digits as its factorization.

7440124729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 7440124729 is about 86256.1576294701. The cubic root of 7440124729 is about 1952.2109245931.

The spelling of 7440124729 in words is "seven billion, four hundred forty million, one hundred twenty-four thousand, seven hundred twenty-nine".