128270407 has 2 divisors, whose sum is σ = 128270408. Its totient is φ = 128270406.

The previous prime is 128270399. The next prime is 128270411. The reversal of 128270407 is 704072821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128270407 - 2³ = 128270399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128273407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64135203 + 64135204.

It is an arithmetic number, because the mean of its divisors is an integer number (64135204).

Almost surely, 2^128270407 is an apocalyptic number.

128270407 is a deficient number, since it is larger than the sum of its proper divisors (1).

128270407 is an equidigital number, since it uses as much as digits as its factorization.

128270407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 128270407 is about 11325.6526081282. The cubic root of 128270407 is about 504.3230572941.

The spelling of 128270407 in words is "one hundred twenty-eight million, two hundred seventy thousand, four hundred seven".