240085429 has 2 divisors, whose sum is σ = 240085430. Its totient is φ = 240085428.

The previous prime is 240085427. The next prime is 240085493. The reversal of 240085429 is 924580042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220522500 + 19562929 = 14850^2 + 4423^2 .

It is a cyclic number.

It is not a de Polignac number, because 240085429 - 2¹ = 240085427 is a prime.

It is a super-2 number, since 2×240085429² = 115282026436228082, which contains 22 as substring.

Together with 240085427, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 240085394 and 240085403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240085427) 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 as a sum of consecutive naturals, namely, 120042714 + 120042715.

It is an arithmetic number, because the mean of its divisors is an integer number (120042715).

Almost surely, 2^240085429 is an apocalyptic number.

It is an amenable number.

240085429 is a deficient number, since it is larger than the sum of its proper divisors (1).

240085429 is an equidigital number, since it uses as much as digits as its factorization.

240085429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 240085429 is about 15494.6903486323. The cubic root of 240085429 is about 621.5202279342.

The spelling of 240085429 in words is "two hundred forty million, eighty-five thousand, four hundred twenty-nine".