423534451 has 2 divisors, whose sum is σ = 423534452. Its totient is φ = 423534450.

The previous prime is 423534427. The next prime is 423534457. The reversal of 423534451 is 154435324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423534451 - 2⁷ = 423534323 is a prime.

It is not a weakly prime, because it can be changed into another prime (423534457) 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, 211767225 + 211767226.

It is an arithmetic number, because the mean of its divisors is an integer number (211767226).

Almost surely, 2^423534451 is an apocalyptic number.

423534451 is a deficient number, since it is larger than the sum of its proper divisors (1).

423534451 is an equidigital number, since it uses as much as digits as its factorization.

423534451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 31.

The square root of 423534451 is about 20579.9526481477. The cubic root of 423534451 is about 750.9820918033.

Adding to 423534451 its reverse (154435324), we get a palindrome (577969775).

The spelling of 423534451 in words is "four hundred twenty-three million, five hundred thirty-four thousand, four hundred fifty-one".