624040129 has 2 divisors, whose sum is σ = 624040130. Its totient is φ = 624040128.

The previous prime is 624040111. The next prime is 624040133. The reversal of 624040129 is 921040426.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381303729 + 242736400 = 19527^2 + 15580^2 .

It is a cyclic number.

It is not a de Polignac number, because 624040129 - 2⁹ = 624039617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 624040097 and 624040106.

It is not a weakly prime, because it can be changed into another prime (624040189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312020064 + 312020065.

It is an arithmetic number, because the mean of its divisors is an integer number (312020065).

Almost surely, 2^624040129 is an apocalyptic number.

It is an amenable number.

624040129 is a deficient number, since it is larger than the sum of its proper divisors (1).

624040129 is an equidigital number, since it uses as much as digits as its factorization.

624040129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 624040129 is about 24980.7952035158. The cubic root of 624040129 is about 854.5500540581.

The spelling of 624040129 in words is "six hundred twenty-four million, forty thousand, one hundred twenty-nine".