124722005 has 8 divisors (see below), whose sum is σ = 153711672. Its totient is φ = 97080768.

The previous prime is 124721981. The next prime is 124722007. The reversal of 124722005 is 500227421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 33443089 + 91278916 = 5783^2 + 9554^2 .

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 124722005 - 2⁶ = 124721941 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 (124722007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336902 + ... + 337271.

It is an arithmetic number, because the mean of its divisors is an integer number (19213959).

Almost surely, 2^124722005 is an apocalyptic number.

It is an amenable number.

124722005 is a deficient number, since it is larger than the sum of its proper divisors (28989667).

124722005 is an equidigital number, since it uses as much as digits as its factorization.

124722005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674215.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 124722005 is about 11167.9006532114. The cubic root of 124722005 is about 499.6290648823.

Adding to 124722005 its reverse (500227421), we get a palindrome (624949426).

The spelling of 124722005 in words is "one hundred twenty-four million, seven hundred twenty-two thousand, five".