240536129 has 2 divisors, whose sum is σ = 240536130. Its totient is φ = 240536128.

The previous prime is 240536123. The next prime is 240536141. The reversal of 240536129 is 921635042.

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., 150798400 + 89737729 = 12280^2 + 9473^2 .

It is a cyclic number.

It is not a de Polignac number, because 240536129 - 2²⁰ = 239487553 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 240536095 and 240536104.

It is not a weakly prime, because it can be changed into another prime (240536123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120268064 + 120268065.

It is an arithmetic number, because the mean of its divisors is an integer number (120268065).

Almost surely, 2^240536129 is an apocalyptic number.

It is an amenable number.

240536129 is a deficient number, since it is larger than the sum of its proper divisors (1).

240536129 is an equidigital number, since it uses as much as digits as its factorization.

240536129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 240536129 is about 15509.2272212383. The cubic root of 240536129 is about 621.9089007857.

The spelling of 240536129 in words is "two hundred forty million, five hundred thirty-six thousand, one hundred twenty-nine".