240428129923 has 2 divisors, whose sum is σ = 240428129924. Its totient is φ = 240428129922.

The previous prime is 240428129863. The next prime is 240428129939. The reversal of 240428129923 is 329921824042.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240428129923 is a prime.

It is not a weakly prime, because it can be changed into another prime (240428127923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120214064961 + 120214064962.

It is an arithmetic number, because the mean of its divisors is an integer number (120214064962).

Almost surely, 2^240428129923 is an apocalyptic number.

240428129923 is a deficient number, since it is larger than the sum of its proper divisors (1).

240428129923 is an equidigital number, since it uses as much as digits as its factorization.

240428129923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 240428129923 in words is "two hundred forty billion, four hundred twenty-eight million, one hundred twenty-nine thousand, nine hundred twenty-three".