128224039 has 2 divisors, whose sum is σ = 128224040. Its totient is φ = 128224038.

The previous prime is 128224007. The next prime is 128224043. The reversal of 128224039 is 930422821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128224039 - 2⁵ = 128224007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128224039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128224049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64112019 + 64112020.

It is an arithmetic number, because the mean of its divisors is an integer number (64112020).

Almost surely, 2^128224039 is an apocalyptic number.

128224039 is a deficient number, since it is larger than the sum of its proper divisors (1).

128224039 is an equidigital number, since it uses as much as digits as its factorization.

128224039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 128224039 is about 11323.6053887443. The cubic root of 128224039 is about 504.2622813382.

It can be divided in two parts, 12822 and 4039, that added together give a palindrome (16861).

The spelling of 128224039 in words is "one hundred twenty-eight million, two hundred twenty-four thousand, thirty-nine".