423129379 has 2 divisors, whose sum is σ = 423129380. Its totient is φ = 423129378.

The previous prime is 423129361. The next prime is 423129383. The reversal of 423129379 is 973921324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423129379 - 2⁷ = 423129251 is a prime.

It is not a weakly prime, because it can be changed into another prime (423129319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211564689 + 211564690.

It is an arithmetic number, because the mean of its divisors is an integer number (211564690).

Almost surely, 2^423129379 is an apocalyptic number.

423129379 is a deficient number, since it is larger than the sum of its proper divisors (1).

423129379 is an equidigital number, since it uses as much as digits as its factorization.

423129379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 40.

The square root of 423129379 is about 20570.1088718558. The cubic root of 423129379 is about 750.7426001876.

The spelling of 423129379 in words is "four hundred twenty-three million, one hundred twenty-nine thousand, three hundred seventy-nine".