128024047 has 2 divisors, whose sum is σ = 128024048. Its totient is φ = 128024046.

The previous prime is 128024027. The next prime is 128024081. The reversal of 128024047 is 740420821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128024047 is a prime.

It is a super-2 number, since 2×128024047² = 32780313220516418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128024027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64012023 + 64012024.

It is an arithmetic number, because the mean of its divisors is an integer number (64012024).

Almost surely, 2^128024047 is an apocalyptic number.

128024047 is a deficient number, since it is larger than the sum of its proper divisors (1).

128024047 is an equidigital number, since it uses as much as digits as its factorization.

128024047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 128024047 is about 11314.7711863740. The cubic root of 128024047 is about 503.9999776917. Note that the first 4 decimals are identical.

Adding to 128024047 its reverse (740420821), we get a palindrome (868444868).

The spelling of 128024047 in words is "one hundred twenty-eight million, twenty-four thousand, forty-seven".