424128977 has 2 divisors, whose sum is σ = 424128978. Its totient is φ = 424128976.

The previous prime is 424128941. The next prime is 424129003. The reversal of 424128977 is 779821424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313962961 + 110166016 = 17719^2 + 10496^2 .

It is a cyclic number.

It is not a de Polignac number, because 424128977 - 2⁸ = 424128721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (424128917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212064488 + 212064489.

It is an arithmetic number, because the mean of its divisors is an integer number (212064489).

Almost surely, 2^424128977 is an apocalyptic number.

It is an amenable number.

424128977 is a deficient number, since it is larger than the sum of its proper divisors (1).

424128977 is an equidigital number, since it uses as much as digits as its factorization.

424128977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 44.

The square root of 424128977 is about 20594.3918822577. The cubic root of 424128977 is about 751.3333183524. Note that the first 4 decimals are identical.

The spelling of 424128977 in words is "four hundred twenty-four million, one hundred twenty-eight thousand, nine hundred seventy-seven".