240653129 has 2 divisors, whose sum is σ = 240653130. Its totient is φ = 240653128.

The previous prime is 240653111. The next prime is 240653131. The reversal of 240653129 is 921356042.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236544400 + 4108729 = 15380^2 + 2027^2 .

It is a cyclic number.

It is not a de Polignac number, because 240653129 - 2⁸ = 240652873 is a prime.

Together with 240653131, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 240653095 and 240653104.

It is not a weakly prime, because it can be changed into another prime (240653159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120326564 + 120326565.

It is an arithmetic number, because the mean of its divisors is an integer number (120326565).

Almost surely, 2^240653129 is an apocalyptic number.

It is an amenable number.

240653129 is a deficient number, since it is larger than the sum of its proper divisors (1).

240653129 is an equidigital number, since it uses as much as digits as its factorization.

240653129 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 240653129 is about 15512.9987107587. The cubic root of 240653129 is about 622.0097193851.

The spelling of 240653129 in words is "two hundred forty million, six hundred fifty-three thousand, one hundred twenty-nine".